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Welcome JaamSim and JaamSim Pro users, please feel free to ask for help, suggest improvements or report bugs you have found.

This group is for discussion related to the JaamSim and JaamSim Pro discrete event simulation software: jaamsim.com and jaamsimpro.com

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Harry King, Clay2

9/30/19

ACTION REQUIRED BY COMMERCIAL USERS OF JAAMSIM

Thanks for this! I am just starting to work with Jaamsim again and noticed that when I went to

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ACTION REQUIRED BY COMMERCIAL USERS OF JAAMSIM

Thanks for this! I am just starting to work with Jaamsim again and noticed that when I went to

9/30/19

Stephan Eibl, Harry King4

Feb 13

JaamSim and Geographic Information System (GIS)

You can use an OverlayImage to display an image taken from some map software. Screen captures from

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JaamSim and Geographic Information System (GIS)

You can use an OverlayImage to display an image taken from some map software. Screen captures from

Feb 13

h_cld_, Harry King4

Feb 11

Invisible objects

Hi Hippolyte, Thank you for emailing a copy of your model. The problem is that the Simulation input

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Invisible objects

Hi Hippolyte, Thank you for emailing a copy of your model. The problem is that the Simulation input

Feb 11

Martin Madaj, Harry King5

Feb 11

Alignment ignored if Accumulating is TRUE?

Hi Harry, Using the EntitySpace for entities of different lengths on the second conveyor was not a

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Alignment ignored if Accumulating is TRUE?

Hi Harry, Using the EntitySpace for entities of different lengths on the second conveyor was not a

Feb 11

Peter Stumpf, Harry King3

Feb 8

Automated extraction of all elements out of a nested array into ONE new array

Dear Harry Thank you very much!! I thought that "reduce(|x,accum| ....)" would only work on

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Automated extraction of all elements out of a nested array into ONE new array

Dear Harry Thank you very much!! I thought that "reduce(|x,accum| ....)" would only work on

Feb 8

Martin Madaj, Harry King3

Feb 6

Accumulation allows more entities than physical length?

Thanks for the answer! I think I understand what you mean. I was confused when I tried to figure out

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Accumulation allows more entities than physical length?

Thanks for the answer! I think I understand what you mean. I was confused when I tried to figure out

Feb 6

Laurent Cormerais, Harry King2

Feb 4

Entities speed variation on a conveyor

Hi Laurent, You are correct that the conveyor does not change its speed until an entity enters or

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Entities speed variation on a conveyor

Hi Laurent, You are correct that the conveyor does not change its speed until an entity enters or

Feb 4

Stephan Eibl, Klaus Holstein2

Jan 7

Access related server attribute ..

Hallo Herr Eibl, können Sie die cfg Datei senden? Besten Dank, Klaus Holstein Am 7. Januar 2026 15:04

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Access related server attribute ..

Hallo Herr Eibl, können Sie die cfg Datei senden? Besten Dank, Klaus Holstein Am 7. Januar 2026 15:04

Jan 7

Stephan Eibl, Harry King5

12/30/25

Link to server name ..

Dear Community, Is there a way to index the attributes. In my case I sorted 3 servers according to

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Link to server name ..

Dear Community, Is there a way to index the attributes. In my case I sorted 3 servers according to

12/30/25

12/28/25

how to use kanban +order

I realize my previous description may not have been clear enough. I've rebuilt the model, but now

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how to use kanban +order

I realize my previous description may not have been clear enough. I've rebuilt the model, but now

12/28/25

Stephan Eibl, Harvey Harrison5

12/22/25

JaamSim REST API ..

Yeah, ChatGPT is completely hallucinating here and is wrong. Harvey On Mon, Dec 22, 2025 at 3:50 AM

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JaamSim REST API ..

Yeah, ChatGPT is completely hallucinating here and is wrong. Harvey On Mon, Dec 22, 2025 at 3:50 AM

12/22/25

H J, Harry King4

12/12/25

SimToken modelling question

Indeed, so simple ... Thanks Harry! On Friday, December 12, 2025 at 8:44:16 PM UTC d.harr...@gmail.

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SimToken modelling question

Indeed, so simple ... Thanks Harry! On Friday, December 12, 2025 at 8:44:16 PM UTC d.harr...@gmail.

12/12/25

Peter Stumpf, H J2

12/8/25

DateInput from InputFile to TimeSeries - does not work

I also encounter this issue (wouldn't it be nice to have all static data specified in a central

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DateInput from InputFile to TimeSeries - does not work

I also encounter this issue (wouldn't it be nice to have all static data specified in a central

12/8/25

H J, Harry King5

12/5/25

Nested conditional mystery

Indeed, that's what I'm doing now; everything now works as expected! Thanks a lot! -- Henk On

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Nested conditional mystery

Indeed, that's what I'm doing now; everything now works as expected! Thanks a lot! -- Henk On

12/5/25

12/3/25

JaamSim 2025-10 released

Changes in release 2025-10: 'EntityDependentList' output. This output returns a list of the

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JaamSim 2025-10 released

Changes in release 2025-10: 'EntityDependentList' output. This output returns a list of the

12/3/25

11/27/25

Problem with two cascaded external programs.

Solved (shame on me): the last conveyer lane had 0 s traveltime making the Entity to instantly

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Problem with two cascaded external programs.

Solved (shame on me): the last conveyer lane had 0 s traveltime making the Entity to instantly

11/27/25

Christina Seo, John Beasley3

11/26/25

Popularity of JaamSim in Healthcare

Hi John, Interesting work! thanks for sharing :) Yea I've seen it more in other industries/

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Popularity of JaamSim in Healthcare

Hi John, Interesting work! thanks for sharing :) Yea I've seen it more in other industries/

11/26/25

11/25/25

Modelling logic.

For your consideration: In the past JaamSim simulation models with substantial logical aspects have

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Modelling logic.

For your consideration: In the past JaamSim simulation models with substantial logical aspects have

11/25/25

11/22/25

External program with Julia (instead of Python); almost works

Solved: in Julia we have `print` and `println` statements (the latter being Python's equivalent

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External program with Julia (instead of Python); almost works

Solved: in Julia we have `print` and `println` statements (the latter being Python's equivalent

11/22/25

Daniel Dwiggins, Cristiano Silva2

11/20/25

Remaining time trigger

I would try using the "expression threshold". Atenciosamente, Cristiano Luís Turbino de

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Remaining time trigger

I would try using the "expression threshold". Atenciosamente, Cristiano Luís Turbino de

11/20/25

H J, Harry King2

11/20/25

Setting TextModel / TextModelDefault

Hi Henk, If you are referring to the font used for Text objects in the View window, you can set the

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Setting TextModel / TextModelDefault

Hi Henk, If you are referring to the font used for Text objects in the View window, you can set the

11/20/25

H J, … Cristiano Silva15

11/19/25

Jaamsim on Linux Ubuntu 24.04: anyone successful?

Dear JaamSim dev team: FYI: Mesa dev says that "Unfortunately no the JaamSim team did not

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Jaamsim on Linux Ubuntu 24.04: anyone successful?

Dear JaamSim dev team: FYI: Mesa dev says that "Unfortunately no the JaamSim team did not

11/19/25

11/11/25

JaamSim and LLM's

Hello everybody, For many years, I have been using this wonderful tool, JaamSim, mainly in healthcare

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JaamSim and LLM's

Hello everybody, For many years, I have been using this wonderful tool, JaamSim, mainly in healthcare

11/11/25

11/5/25

Starting the simulation from a fixed point?

Hi all, Thank you for your previous guidance, I've been working on a sim model of an emergency

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Starting the simulation from a fixed point?

Hi all, Thank you for your previous guidance, I've been working on a sim model of an emergency

11/5/25

Aécio Silva, Harry King5

10/31/25

Help with MQTT and simple queues

Hi Harry, Thank you for sharing the example. I really appreciate it. It gave me a great reference

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Help with MQTT and simple queues

Hi Harry, Thank you for sharing the example. I really appreciate it. It gave me a great reference

10/31/25

Cristiano Silva, Harvey Harrison9

10/30/25

Problem upgrading from OpenJDK 17 to OpenJDK 21 on Debian 13.

Thank you, Mr. Harvey Harrison, for your attention. I am available to take the tests. Atenciosamente,

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Problem upgrading from OpenJDK 17 to OpenJDK 21 on Debian 13.

Thank you, Mr. Harvey Harrison, for your attention. I am available to take the tests. Atenciosamente,

10/30/25

Brian Cheung, … Harry King9

10/27/25

Is there a way to seize a specific resource from a pool based on a condition

Hi Brian, The patient can determine which doctor has been assigned to him by defining a custom output

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Is there a way to seize a specific resource from a pool based on a condition

Hi Brian, The patient can determine which doctor has been assigned to him by defining a custom output

10/27/25

Jason Smolensky, … Peter Stumpf6

10/23/25

Simulating Price Processes

Hi Peter, Apologies, I thought I answered this earlier but somehow the message wasn't posted. I

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Simulating Price Processes

Hi Peter, Apologies, I thought I answered this earlier but somehow the message wasn't posted. I

10/23/25

SARA GUIMARAES GAUDIOSO PAIVA, … Harvey Harrison3

10/14/25

It works in as much as the conventional mouse emulation works, I haven't explicitly written any

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It works in as much as the conventional mouse emulation works, I haven't explicitly written any

10/14/25

Nauzad Tantra, … john.b...@arup.com8

9/28/25

Set Pack>NumberOfEntities using entity object attributes

Hi John, Would you have any ideas on how you could set a different "NumberOfEntities" value

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Set Pack>NumberOfEntities using entity object attributes

Hi John, Would you have any ideas on how you could set a different "NumberOfEntities" value

9/28/25

Stephan, … Nauzad Tantra5

9/25/25

Error with the 2024-07 update

Hi Harry, I tried deleting the label under the PrototypeEntity and it works fine. However, the second

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Error with the 2024-07 update

Hi Harry, I tried deleting the label under the PrototypeEntity and it works fine. However, the second

9/25/25

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