Creating a variable in the sink to count items

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Unax Urrutia asked Apr 7, '25 Felix Möhlmann commented Apr 16, '25

Creating a variable in the sink to count items

I want to know how could I create a varible in the sink triggers (On Entry) that is based on a Table. The value, I want it to be a code.

Software Version:

FlexSim 23.2.3

sink variable counter

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Answer 1 · 2025-04-07T09:20:03Z

Felix Möhlmann answered Apr 7, '25 Felix Möhlmann commented Apr 15, '25

If you assign flexscript to a table cell that is does not need any external paramters then you can use the standard syntax "Table(tableName)[row][col]".

To pass in parameters, access the node of the cell and use "evaluate()" on it. ("Table(tableName).cell(row, col).evaluate(params)")

flexscript-table-example.fsm

flexscript-table-example.fsm (27.2 KiB)

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Unax Urrutia commented · Apr 07 at 09:27 AM

The thing is I want to create a varible as a trigger "on entry" of a sink to count items with the following code:

gettablecell(label(current,"ItemCounts"),item.Type,1)

For this reason, I need to specify the varible "As.Table"

The questions would be:

· Where in the triggers could I create the variable?

· How could I speccify to the trigger that is a table?

· Where could I add the code mentioned previosly in the trigger?

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Felix Möhlmann Unax Urrutia commented · Apr 07 at 10:10 AM

You don't need to create a table variable for that command. Either the label node has the correct structure for a table and the command works or it doesn't.

The non-deprecated expression would be "current.labels["ItemCounts"].as(Table).cell(item.Type, 1)". In this case the as.(Table) is needed for the compiler to recognize cell() as a valid method.

label-table-example.fsm

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label-table-example.fsm (27.6 KiB)

Unax Urrutia Felix Möhlmann commented · Apr 07 at 10:19 AM

Hello again,

Sorry but I can't oper the files. Actually, I have the FlexSim 23.0.14 version...

I don't know if you could help me in another way.

Thanks!

Regards,

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Answer 2 · 2025-04-16T06:39:19Z

Unax Urrutia answered Apr 16, '25 Felix Möhlmann commented Apr 16, '25

Hello @Felix Möhlmann

Thank you vey much for your detailed answer. It has been very useful.

I have some questions related to this:

Could it be posible to repeat the demad table from the start once it is finished and continue with the time?
What information gives me in a practical way the itemcounts varible table?
Could it be possible to define an hour in each day to start pulling the items to the sink?

Thanks a lot!

Best regards,

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Felix Möhlmann commented · Apr 16 at 06:55 AM

- As I said, instead of stopping the model you could reset the "CurrentDay" variable back to 1 if it becomes larger than the number of rows in the demand table.

- The "itemcounts" label table defines how many items of each type should still be pulled.

- The items will be pulled as soon as the user event is executed. By changing when the event triggers, you can change when the pull starts. If you want to use a non-regular interval (the pull time changes depending on the day), it would probably be easier to place the code in a Custom Code activity in Process Flow instead and generate tokens to execute the code at specific times in a schedule source.

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