struggling a little on an iterate

I am needing to translate an HL7 FT1.19 field to a database schema vrl.

I am wanting to transform this:

E10.9^DIABETES 1.5, MANAGED AS TYPE 1^I10~I50.9^CHF (NYHA CLASS II, ACC/AHA STAGE C)^I10~Q60.2^KIDNEY AGENESIS^I10

To this:

E10.9^DIABETES 1.5, MANAGED AS TYPE 1^~I50.9^CHF (NYHA CLASS II, ACC/AHA STAGE C)^~Q60.2^KIDNEY AGENESIS

…basically removing the ICD code set from the field.

Trying to accomplish this inside an xlt (to keep it simple for future maintenance)… so i built a field iterate and I feel I’m close, but I need to append each iteration to the previous….

Help me append them together here  🙂