iteration on repeating field

Hello,

I have a field iteration on TXA23 (repeating field) to insert an system processing ID on each phycians record.  This is working.

2249^Pasternak^Keith^^^^^^^^^^EPROV~8216^Oh^Young^S^^^^^^^^^EPROV

But I also need to concat a a specific provider at the end of of the field, so it looks like:

2249^Pasternak^Keith^^^^^^^^^^EPROV~8216^Oh^Young^S^^^^^^^^^EPROV~PL5005

The number of providers on each message varies and with my attempts I am only able to concat to the field first component.  |2249~PL50005^

Any help would be appreciated.

Code:

{ { OP ITERATE }

   { BASIS 0(0).TXA.#23 }

   { VAR %f1 }

   { TYPE field }

   { BODY {

       { { OP IF }

           { ERR 0 }

           { COND {0(0).TXA.#23(%f1).[0] ne @null} }

           { THENBODY {

               { { OP COPY }

                   { ERR 0 }

                   { PRE {

                       xlt_esp_prov_select_idtype

                   }}

                   { IN {{0(0).TXA.#23(%f1).[0]}} }

                   { OUT {{0(0).TXA.#23(%f1).[12]}} }

               }

           }}

           { ELSEBODY {

           }}

       }

       { { OP IF }

           { ERR 0 }

           { COND { ~0(0).TXA.#2.[0]  eq @ltr ||  ~0(0).TXA.#2.[0] eq @ltr1} }

           { THENBODY {

               { { OP COMMENT }

                   { COMMENT {Add the letter pool to the end of the CC md field TXA 23} }

               }