Trying to create a nested if

Question

I used this formula,
Local StringVar docType := {L_HPLI.OBJECT}[6To 6];
Local StringVar Comment1 := {L_HPLI.OBJECT}[96 To 256];
If docType In ["P", "p"]
and ({POLINE.L_INDEX} = {L_HPLI.L_INDEX})Then
   Comment1
Else
It works if there is a comment stored in L_HPLI. If there is no comment stored in L_HPLI then the value of POLINE.L_INDEX four spaces.
I tried placing the above lines in a IF statement.
If (Len ( Trim (POLINE.L_INDEX)) > 1 ) Then
   Local StringVar docType := {L_HPLI.OBJECT}[6To 6]
   Local StringVar Comment1 := {L_HPLI.OBJECT}[96 To 256]
   If docType In ["P", "p"]
   and ({POLINE.L_INDEX} = {L_HPLI.L_INDEX})Then
      Comment1
   Else
Else
I was trying to trim the spaces (there are 4) and check the result for a length of greater than 1, if there is a value in the string I want to use the formula. If the string is just spaces, I don't want to use the formula, but I do want to return a blank to the report.
I hope this makes sense.
Can anybody help?

Answer 1

I tried
Trim ({POLINE.L_INDEX});
if len ( {POLINE.L_INDEX})>= 1 then
Local StringVar docType := {L_HPLI.OBJECT}[6To 6];
Local StringVar Comment1 := {L_HPLI.OBJECT}[96 To 256];
If docType In ["P\", "p\"]
and ({POLINE.L_INDEX} = {L_HPLI.L_INDEX})Then
Comment1
Else
else
This code can be saved, but it does not work. It does not return comments where there are comments, not spaces where the comments are missing.
This code returns a comment when there is one
Local StringVar docType := {L_HPLI.OBJECT}[6 To 6];
Local StringVar Comment1 := {L_HPLI.OBJECT}[96 To 256];
If docType In ["P", "p"]
and ({POLINE.L_INDEX} = {L_HPLI.L_INDEX})Then
   Comment1
Else