Invalid character in parameter name

[Lockhart, Stephen C]

We have a custom data source that we also use to generate our .prn file. 

 

In the real-time client display, in the configuration tool, under Parameter Defaults, when clicking on the button for “Validate Parameters and Displays”, most of the parameters fail validation with some message about the parameter having an invalid character.

 

What characters are not allowed in the parameter name, which would cause it to fail validation for this reason?

 

An example of one of our parameter names (described generically) is:

 

Message_Name->Bus_Name->Bus$ODB_Name->.Data_Element.Data_Subelement

 

I shortened the name for one of the parameters to

 

Message_Name.Data_Element

 

and validation appeared to pass.

 

So I’m guessing one or more of the special characters is causing us problems.

 

Thanks,

Steve Lockhart

801-775-2971

[Adam Chant]

Steve,
Here's a list of the invalid characters for a Parameter Name: \ / : * ? \ " < > |
Good luck,

 

Adam Chant
Symvionics, Inc.
IADS Application Engineer
(661) 273-7003 x 210

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[Michael Jones]

Hello Steve,

Here’s the list of disallowed characters for parameter names (Primarily because they are invalid file names)

cInvalidParameterNameChars = "\\/:*?\"<>|";

Similarly, there are also a host of characters that are not a good idea.  Primarily arithmetic operators. i.e. plus, minus/dash, question mark, etc)

By default, these characters will cause errors in the derived equation engine.

For example:

Parm1 is named BILLY-BOB

Parm3 has a derived equation of BILLY-BOB

Parm3 will try to evaluate the equation as ‘parameter named BILLY  minus parameter named BOB’

To override the default equation parsing Parm3’s equation will need to be defined as {BILLY-BOB} - evaluating as ‘the current value of BILLY-BOB"

Regards,

Mike

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Michael Jones
Symvionics, Inc.
IADS Telemetry Systems
661-277-5465

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[Kathy Rodittis]

Hi Steve-

One more rule! 

No whitespace for any parameter name that appears in a PRN file.

Kathy 

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