code syntax remove comma from decimal

Function String2Decimal(ptexString : Text[250];ptexFormat : Text[250];PtexDecimalSign : Text[1]) PdecReturnValue : Decimal
// String2Decimal
// Receives a string and a format and converts that to a decimal
// If a decimal sign is put into the string, then the rest of the size is not important,
//   the right side is considered the decimal part, the left side is considered the integer part.
//   The format is not considered in that case.
//   Non-digit-characters are just filtered out ex: 'A5B6.D8R' => 56.8
// If no decimal sign is put into the string, the format is important and it is interpreted
//   FROM RIGHT TO LEFT (and not from left to right)!!
//   ex : '12345','IIIIIIDD' => 123.45
//   ex2 : '12345','IDD' => 123.45   (the decimal digits are important, the rest is added when necessary)
// PARAMETERS :
//   ptexString : the string to be converted
//   ptexFormat : the format of the string (if it is a normal number, with a decimal sign if necessary,
//                                          you can leave this parameter blank)
//                   i : integer part
//                   d : decimal part
//                   . : decimal sign
//   PtexDecimalSign : ',' : decimal comma
//                     '.' : decimal dot
//                     other character : standard of Navision for decimal sign
//   RETURN-VALUE : the decimal or 0 if something was wrong with ptexString
//
// EX: (the point is always the current decimal sign in these examples!!)
//   '12345','II.DD' => 12.45
//   '12345','IDD' => 123.45
//   '12345','DD' => 123.45
//   '12345','IIIIIIIDD',123.45
//   '12345','' => 12345
//   '-12345','' => -12345
//   '12D3D4D5','' => 12345
//   '12D3D4D5','I' => 12345
//   '123.45','' => 123.45
//   '123.45','III.DD' => 123.45
//   '123.45','IID.DD' => 123.45
//   '1,123.45','' => 1123.45


IF DELCHR(ptexFormat,'=','ID.') <> '' THEN
  ERROR(STRSUBSTNO(ltxcFormatNotCorrect,ptexFormat));

// determine thousand and decimal seperator
IF (PtexDecimalSign <> ',') AND
   (PtexDecimalSign <> '.') THEN
  PtexDecimalSign := GetDecimalSign();

PdecReturnValue := 0;
lblnNegative := FALSE;
ltexIntegerPart := '';
ltexDecimalPart := '';

lint := NumEntries(ptexString,PtexDecimalSign);
IF lint = 1 THEN BEGIN
  lintLen := STRLEN(ptexString);
  lintLen2 := STRLEN(ptexFormat);
  WHILE lintLen + lintLen2 > 0 DO BEGIN
    IF lintLen2 = 0 THEN BEGIN
      ltexIntegerPart := COPYSTR(ptexString,1,lintLen) + ltexIntegerPart;
      lintLen := 0;
    END
    ELSE IF lintLen = 0 THEN
      lintLen2 := 0
    ELSE BEGIN
      CASE FORMAT(ptexFormat[lintLen2]) OF
        'D': ltexDecimalPart := COPYSTR(ptexString,lintLen,1) + ltexDecimalPart;
        'I': ltexIntegerPart := COPYSTR(ptexString,lintLen,1) + ltexIntegerPart;
      END;
    END;
    lintLen := lintLen - 1;
    lintLen2 := lintLen2 - 1;
  END;
END
ELSE BEGIN
  ltexIntegerPart := Entry(1,ptexString,PtexDecimalSign);
  ltexDecimalPart := Entry(2,ptexString,PtexDecimalSign);
END;

ltexIntegerPart := DELCHR(ltexIntegerPart,'=',DELCHR(ltexIntegerPart,'=','-+0123456789'));
ltexDecimalPart := DELCHR(ltexDecimalPart,'=',DELCHR(ltexDecimalPart,'=','-+0123456789'));

lintLen := STRLEN(ltexIntegerPart);
FOR lint := 1 TO lintLen DO BEGIN
  CASE FORMAT(ltexIntegerPart[lint]) OF
    '-': lblnNegative := TRUE;
    '0'..'9': BEGIN
      EVALUATE(lintHelp,FORMAT(ltexIntegerPart[lint]));
      PdecReturnValue := PdecReturnValue * 10 + lintHelp;
    END;
  END;
END;
lintLen := STRLEN(ltexDecimalPart);
FOR lint := 1 TO lintLen DO BEGIN
  CASE FORMAT(ltexDecimalPart[lint]) OF
    '-': lblnNegative := TRUE;
    '0'..'9': BEGIN
      EVALUATE(lintHelp,FORMAT(ltexDecimalPart[lint]));
      PdecReturnValue := PdecReturnValue + lintHelp * POWER(0.1,lint);
    END;
  END;
END;

IF lblnNegative THEN
  PdecReturnValue := - PdecReturnValue;