Segment creation problem

I have a File to IDoc scenario. The IDoc imported has a particular segment E1EDPAD occuring only once in the structure. I have PRI and QUALF in that segment. For a particular source field X, I need to send the value of QUALF as 3 and then the value of X to PRI. For another source field Y, I need to send the value of QUALF as 7 and then the value of Y to PRI.

The problem is the source IDoc has one occurence of segment E1EDPAD. How do I add a segment the second time in Idoc with the respective values?

The QUALF values are always hard coded. The other values,X and Y change