Feeder logic using Process Flow

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Hemanth Sai Kumar asked Jul 25, '24 Jason Lightfoot edited Jul 26, '24

Feeder logic using Process Flow

Hi community,

I have a use case where I need to write a feeding query logic in the process flow to pull parts from the queue based on condition. I am trying a if else condition to do so, but I am getting error while doing it.
Error:

time: 26.783511 exception: Exception caught in start() of activity "Pull from List" in process flow "ProcessFlow". Continuing throw...

time: 26.783511 exception: FlexScript exception: invalid variant type in list pull at MODEL:/Tools/ProcessFlow/ProcessFlow/Push to List>variables/onWaitTimerFired

Can someone help in resolving this,

Below I am attaching my sample model.
Feeder logic.fsm

Software Version:

FlexSim 24.1.1

process flow queue pullfromlist

feeder-logic.fsm (39.0 KiB)

· 1

Joerg Vogel commented · Jul 25 at 11:59 AM

@Hemanth Sai Kumar, where do you assign a label called Type at a token? Conditions of global variables belong into process flow and not into a query. If you have checked all global conditions, then you you query for an list entry matching your filter. And it should be an query clause of a SQL as programming language.

0 ·

Answer 1 · 2024-07-26T17:34:37Z

Jason Lightfoot answered Jul 26, '24 Jason Lightfoot edited Jul 26, '24

You can't put a FlexScript expression in the query fields and only return numerics - it needs to be a query, object or array that get's returned.

But it looks like you should be able to push the item to the list and then just put this expression directly into the query field:

WHERE (Type=2 AND {Type_B_count<3}) OR (Type=1 AND {Type_R_count<2})

The braces {} are for FlexScript expressions and seem to be needed to refer to the Global Variables.

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