Here I am basically looking for a dependency parameter.
Let's say I have two dropdowns in the build parameter section. Based on the value selected from the first dropdown the possible default I want the values of the second dropdown to vary.
Is there any plugin or approach to handle this requirement effectively?
This is exactly what you are looking for: https://github.com/biouno/uno-choice-plugin/wiki/Uno-Choice-Cascade-Dynamic-Choice-Parameter
It seems to be a hidden gem, haven't found it in any of the similar questions so far.