OnMessage in wait for event

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shanice.c asked Jan 30, '22 Ryan Clark commented Feb 2, '22

OnMessage in wait for event

Hello everyone, I have two process flows. I'd like to release token waiting in flowA by sending message from flowB. The token in flowA is kept in a wait for event activity and listen to onMessage.

It seems the token is releases but my model has exceptions below. How could I fix it in wait for event activity?

testonMessage (1).fsm

Software Version:

FlexSim 21.2.0

onmessage

1643545501811.png (9.5 KiB)

testonmessage-1.fsm (32.9 KiB)

· 1

Ryan Clark commented · Feb 02, 2022 at 08:03 PM

Hi @fiona.c, was Jason Lightfoot's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

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0 ·

Answer 1 · 2022-01-30T14:02:36Z

Jason Lightfoot answered Jan 30, '22

The problem is not in the WaitforEvent activity, it's in the ill-defined Assign And Send Message.

Your 'toObject' is NULL since it's the second, optional parameter that requires the activity name - not the first. The instance to use in gettoken() would not be "current", and also the token is likely unable to handle the message anyway.

Synchronisation like this is better done using lists - I recommend you try that.

1643550579514.png (16.7 KiB)

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