selecting only certian variables under one table with multiable names

[sxmnl]

I'm new to crystal so be gentle.
I have a table called VARIABLE_NAME, and another called Variable_Value. This is a batch process report. all the variables reside under the VARIABLE_NAME table. I have certian Variable_Value's then come threw in a msec time. I need to convert them to hour's IE: the batch ran 4.0 which equals hours. /60000. I tried to make a parameter field selecting just the variables I need, then a formula to convert them, but I think I'm to new...

Thanks in adv