I think there is no direct way to select multiple values in parameter. One workaround is to create combination of values in parameter if we have less number of values in parameter. For example i have A,B,C values in parameter. So we can create parameter with following list of values.
like this we can do.
I got your point, but I want to give this option to my user who can select anything from the given options. I have around 10 options so it would be difficult to get these many combinations.
Yes this might be the requirement for many of us , But there is no way to select Multiple values in parameter. Try with creating multiple parameters and select one value in each parameter , then use all parameters in calculation. If you want to select 2 values only you can create 2 parameters , but if we want to select 5 values it will be difficult to create 5 parameters.
Thanks for your response, I will look into this.