Zone getstat not working

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Joey A asked Mar 28, '24 Joey A commented Mar 30, '24

Zone getstat not working

Hi,

I tried an answer form the flexsim community on how to count the number of tokens in my zone. It told me to use this code in the script (or decide activity): getstat(getactivity("Zone"), "Content", STAT_CURRENT) (link to question is here...https://answers.flexsim.com/questions/74314/reading-number-of-tokens-in-the-zone.html

Note: the link says to have type it this way but my script errored out: getstat(getactivity(processFlow,"Zone"), "Content", STAT_CURRENT). I could only get a value if i used the code in my first paragraph

However it keeps giving me a ridiculously high number (340282346638528859811704183484516925440.00).

Do you know what I'm doing wrong?

Joey

Zone count Help.fsm

Software Version:

FlexSim 23.0.5

zone zone statistics getstat

zone-count-help.fsm (46.8 KiB)

Answer 1 · 2024-03-28T15:18:02Z

Jason Lightfoot answered Mar 28, '24 Joey A commented Mar 30, '24

Use:

getstat(getactivity("ProcessFlow","Zone"), "Content", STAT_CURRENT)

· 4

Joey A commented · Mar 28 at 05:59 PM

well that seems obvious haha. thank you!

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Joey A commented · Mar 28 at 06:21 PM

Hi,

that fix worked in my example sheet and I'm not sure why it isn't working in my full simulation model. My best guess is its because I'm trying to reference something in an AGV process flow template

I'm using the following code to pull the token count and I'm getting the same large number I was getting before the fix

New code: getstat(getactivity("AGV","Trailer_Unloading"), "Content", STAT_CURRENT)

Note: i changed "ProcessFlow" to "AGV" so it referenced the correct process flow sheet. I also changed the "Zone" to "Trailer_Unloading" since that is the name of the zone.

Do you know why these changes are not working?

Joey

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Jason Lightfoot ♦ Joey A commented · Mar 28 at 11:01 PM

The AGV process flow is an Object/Instanced Process Flow and getactivity("AGV","Trailer_Unloading") doesn't allow us to specify the instance to use. If you change the zone to global then it will work as-is, but the zone will apply to all agv tokens.

To get the local zone content by instance it will be something like this:

Object activity=getactivity("AGV","Trailer_Unloading");
return node(">stats/instances/AGV1/content",activity).value;

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Joey A Jason Lightfoot ♦ commented · Mar 30 at 02:43 AM

That worked. Thank you! and thank you for the explanations...its helps me learn how to use the software.

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