Publishing file in dynamic file location (creating conditional string)

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Posted on by DJanssen

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Hello all,

Still pretty new to Power Automate: I have a Document Library where users press a button to start a Power Automate Approval workflow. After the Approval is concluded the file should be published in a folder.

Users are trained to fill in these columns where they want their file to be published, for example:

This would result in the file being published in here:
/Shared Documents/IMS Published Folder/Some map/Some map2

However only L1 is required, the other 3 locations are optional. I have created the following string in my workflow to use as the publish location string:

What would be the easiest way to update this string if the L2/L3/L4 have value? I can only think of a lot of If statements but that would throttle the flow sadly.

For extra information Users will only fill in L4 if L1/L2/L3 have value etc. So a combination of L1 and L3 is not possible.

Thanks a lot!

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DJanssen 427 on at

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Re: Publishing file in dynamic file location (creating conditional string)

I did it by writing a concat expression that had a lot of nested if(isEmpty()) checks.