ReadyAPI - How to use code in the custom properties of a test step ?

Say we have a test step which actually calls/runs some test case. One of the properties, say ID has a variable value which is set by something else (script, another test step etc.). E.g. like this:

ID : ${TestCase-GetId#ID}.

Can I use code inside the value box/field to alter the value of ID? This will be useful for ad hoc testing or could be used normally in the test. E.g. ID : ${TestCase-GetId#ID}.subString(0, 5). I don't want to create another groovy script for minor changes to property values.

I know that we can prepend or append constants to the value easily like this - ID : MyId_${TestCase-GetId#ID}. But, I don't know if we can use code there instead. If we can use code, then are there any limitations (e.g. the code should be 100 characters or less) ?

Keywords -

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