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How to concatenate two list variables

Nydia Neuss

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I know that variable lists (e.g. [“var1”,”var2”]) are very useful when used in task parametric options: however sometimes I had the need to use a concatenation of lists in parametric option, but I don't know how (and if) it can be done. In particular I would like to use in a Fill & Clean task a variable list that is the concatenation of the list contained in the process variable @var1 and @var2.


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You can do that simply using the function cat().

If you want to use a list composed by @var1 and @var2 in your Fill & Clean task, you have to write in your parametric option the following line:


Generally speaking, cat() function allows you to concatenate 2 lists only.
If you want to concatenate three or more (e.g. @var1, @var2 and [“A”,“B”,“C”]) you have to write:



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