Hi,
I would like to listen the change of the label value, but OnLabelValueChange does not work well. I attach the model. Do I need to configure anything?
Is there no other option but to sample the tracking variable labels directly from the tree?
Thanks in advance.OnLabelValueChange.fsm
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To use wait for event with the change in a label value, the label has to have a Tracked Variable datatype. In my example, I use a token to create an item with a Label whose value is a tracked variable:
In my example I chose a "Level" tracked variable type. In the wait for event you use the label as the object reference:
To Get access to the on Change event, you have to sample a different tracked variable, I usually just create one in the Toolbox so I can sample the OnChange event.
The change rules give you a lot of options for how the value should change in order to release the token from the wait for event. In my example, I have it set so that every 5 times a flowitem goes around a conveyor loop, it randomly changes its color.
What I want to know is about the On Label Value Change event, not the On Change event.
In my model, the operator has the label which has a Tracked Variable datatype. Therefore, when sampling with the WaitFor Event sampler, the On Label Value Change option becomes selectable. Is there something wrong with this approach?
You can also sample the label in the tree as a pointer type which will then continue to listen to the label even if you rename it which might be better that using labels["Type"]
Here's the model of that working for the operator with an event at 10s to change the label value.
It does look like OnLabelValueChange doesn't work - even for the case described in the documentation. It gives exceptions when reaching the activiy. I'll send a report into the developers - thanks for drawing this to our attention.
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