How to remove extra carriage return on a generated text file in Appian

load(
/*This expression should be 100% - 9-19-19 */
  
  local!lines:if(
    rule!APN_isEmpty(ri!DIRDEP_LINES),
    {"NO DATA,000000.00,000000.00"
    },
    {
    a!forEach(
      /*replace test array with rule input*/
      items: ri!DIRDEP_LINES,
      expression: {

       /* Position 1-7 (7) CCDDEP_ACCOUNT_NO */
         substitute(padleft(trim(fv!item.caseId),7)," ",0) & 

       "," & 
       
       /* Position 9-17 (9) CCDDEP_AMT */
       if(rule!APN_isEmpty(fv!item.paymentAmt),
           substitute(padleft(trim(fv!item.paymentAmt),9)," ",0),
           substitute(padleft(trim(fixed(fv!item.paymentAmt)),9)," ",0)
        ) &
        
         "," & 
       
       /* Position 19-27 (9) CCDDEP_AMTR */
         if(rule!APN_isEmpty(fv!item.paymentAmt),
         substitute(padleft(trim(fv!item.paymentAmt),9)," ",0),
         substitute(padleft(trim(fixed(fv!item.paymentAmt)),9)," ",0)
         ) 
      
      }
    )

  }),
  joinarray(stripwith(local!lines,";"),chr(13)&CHR(10))
)

The code looks like this.

The text file is generated dynamically when the process model runs.