what to do when the error messages don't help - problem with an ifelse ...somewhere

[howard...@gmail.com]

hello this model: 

http://m.modelling4all.org/m/?frozen=8_1E60DEiJ7kPPUH1z6t5h&MforAllModel=1

throws an error but I can't see why - the ifelse structures look ok to me.

as background I just changed manage job roster on fisher from using ifelse to simply two if statements

[howard...@gmail.com]

actually, I just tracked this down to a problem with using the when condition on the create harbor behaviour (I guess when primitive uses ifelse)

i can't see how to fix it though.

[howard...@gmail.com]

i want to be able to say something like:

when member? "the-shallows" [ kind-of-patch ] of patch-here

[Ken Kahn]

The error is due to 'create harbor' -- it has when [1] ...

The following is probably fine

On 21 November 2012 20:07, howard...@gmail.com <howard...@gmail.com> wrote:

when member? "the-shallows" [ kind-of-patch ] of patch-here

Best,

-ken