I have a CDT pushgroups with label vale, push group, pservid, pushtime etc.

Can you describe how you intend to use these values? I'm guessing you're using a query rule that returns an array of your CDT. Once you have the CDT array, you can use the index function to access the fields that you need e.g. index(ri!array, "pservid", <your default value>). This would return an array of pservId values. You'd do the same for the other fields, but that just gives you arrays for each. Do you need to display these values somewhere?