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Cindy avatar image
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Cindy asked Felix Möhlmann answered

How to know if there ar items in a floor storage in process flow

Im working on a model where i want to process different items, im doing so in process flow, but i dont know how to put in a conditional decide if there are objects on a floor storage to follow one processs or if there are no products to follow a different process.

1708962129147.png

I was trying to do it with a wait for event activity but if i use it the token will be stuck in there, and if i dont put that wait for event then the token label i need will not exist, so i just want to put in the conditional decide if there are objects in the specific floor storage.

I was trying to put in the condition this line of code but it only works if i have the wait for event put in there. 

objectexists(token.RBC) && token.RBC.up == Model.find("RBC")

How can i solve this problem?

FlexSim 23.0.0
processs flowfloorstorageconditional
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1 Answer

Felix Möhlmann avatar image
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Felix Möhlmann answered 
Model.find("RBC").subnodes.length

returns the number of items currently in the "RBC" object.

Instead of using multiple Decide activities in a row, you can also write multiple checks into one as custom code. Returning a different connector rank for each.

if(Model.find("RBC").subnodes.length == 0) {
   return 1;    // First connector if RBC is empty
}
if(Model.find("PL").subnodes.length == 0) {
   return 2;    // Second connector if PL is empty
}
if(Model.find("PQ").subnodes.length == 0) {
   return 3;    // Third connector if PQ is empty
}
...
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