String Functions for Variables in an Action Link Plugin URL

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Hi

In OFSC Mobility, I have an Action Name (under Configuration -> Action Mgmt) with a plugin url whose parameters pulls in OFSC (native and custom) properties as variables.

So, for example, the plugin url below pulls in the service order # and postal code:

https://domain.com?serviceo={appt_number}&pc={czip}

The postal code {czip} value is in the format "A1A 1A1". I want the postal code without the space in between.

Can anyone give me a quick tip on how to add typical string functions to the variables/property names in curly brackets in the example url above? e.g. TRIM, LEFT, RIGHT, CONCAT, etc.