PCM Variable question

[[Ry...]]

Hello, all I am new to working with PCM and I have a question on how or if it is possible to do this. Basically I have parts that have been in service, and have a measurement that needs to be compared to the initial manufactured value. The values are sorted by part serial number in a parametric file. Basically I want have the operator input the S/n then have calypso search for the that S/n in the list and pull the value. Then in put the value into a formula to find the difference. I cant seem to figure out how to get the imputed value to be used as the value to search the external file, or be be defined as a parameter. 

Thanks. 

[[Ch...]]

Yes this is possible with PCM,

 

Instead I would  personally suggest recalling original measurement and output to excel, then run part as it is now and output to excel an do a comparison there.