Assign Slot Error

[king_ki_f]

[ FlexSim 20.1.0 ]

Hello,

In my process, I have an operator grab a tote flowitem from the queue named MergeTo. When my operator goes to pickup the tote, I'm getting the following error message

time: 238.992838 exception: int assertattribute(TreeNode *object,char *name, int datatype)
ex: assertvariable
time: 238.992838 exception: FlexScript exception: MODEL:/Tools/ProcessFlow/PFL_Inventory/Custom Code - Assign Slot~2>variables/codeNode

I do not understand what this error message means because I do not believe I've used an int datatype in my assignslot code. Would someone be able to help me understand ? I've uploaded the model below and where the error occrus if it helps.

Outbound Merging v8.fsm

[philboboADSK · Accepted solution]

@King-Ki F

The issue is not in the "Custom Code - Assign Slot" activity that is circled in your screenshot.

The issue is in your other "Custom Code - Assign Slot" activity that is higher up in your Process Flow.

The circled section uses the "Determine Putwall Location" subflow, which has its own "Custom Code - Assign Slot" activity.

When the exception happens, the token in that activity does not have a PolyBag label, which you are passing to Storage.Item(). This throws the exception you are seeing.

[king_ki_f]

Thank you! That was helpful! Would you mind explaining how to use the Watch Variable tab? It looks very useful for debugging purposes and maybe even finding specific tokens in a very large process flow.

[philboboADSK]

https://docs.flexsim.com/en/20.1/Reference/CodingInFlexSim/Debugging/