FlexScript exception: Invalid Variant types

Question

question

Laurenz Peleman asked Mar 13, '19 Laurenz Peleman commented Mar 13, '19

Hi everyone

After updating a model from Flexsim 17.1.6 to 18.2.2 I got the following error:

exception: FlexScript exception: Invalid Variant types in + operation at MODEL:/Tools/ProcessFlow/MaterialTransport/Update feeds>variables/codeNode

, which is thrown for the following lines of code:

double valueToAdd = token.valueToAdd ;
token.labels.assert("feedToUpdate").value += valueToAdd;

Anyone who has experience with this error, as I have never received it before...

Kind regards

Software Version:

FlexSim 18.2.3

Answer 1 · 2019-03-13T14:37:46Z

Phil BoBo answered Mar 13, '19 Laurenz Peleman commented Mar 13, '19

You didn't specify an initial value for the label in the assert() command, so it isn't giving the label data.

You are trying to add (no data) with a (double), which throws an exception.

From the Release Notes of 18.2.0:

Pass 0 as the second parameter in your assert() call:

double valueToAdd = token.valueToAdd ;
token.labels.assert("feedToUpdate", 0).value += valueToAdd;

· 1

Laurenz Peleman commented · Mar 13, 2019 at 03:16 PM

Thanks for the clear answer, @phil.bobo, I was not aware of that change

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