Yeah you can achieve this using parameter.
Just create a string parameter like this.
And create a case statement to link your parameter
WHEN "2" THEN [CAROC CL1 Value]
WHEN "3" THEN [CAROC CL2 Value]
Something like this you can try. If you're unable to execute then share your sample workbook in .twbx format.
Thanks for your suggestion Mahfooj.One More Query I have is what if I have Multiple values corresponding to Custom Caroc CLI 1 & Custom Caroc CLI 2.Say there are n number of values.How shall we display then when value keeps on changing as well ?
Values will be aggregated when you drag it to canvas. You've to play around how you wants to show the values in your viz. Here If you drag the calc field which I've shown in case statement. It'll agg to SUM post drag in the canvas.
I couldn't get your last sentence. Feel free to ask If you've any question.