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Message: [QUOTE="KJ, post: 3556114"] Since your input string has some non-numeric characters in it that you presumably want to keep in the string, then the best approach would be to simply write a function that parses the string however you'd like. Below is an example that simply adds the 'value' of each input character to produce an integer output. You should be able to easily modify this to select out whichever characters you want and perform whatever calculations you'd like. function Version_String_To_integer(Some_String: STRING) return integer is variable Return_Value: integer := 0; begin for i in Some_String'range loop Some_Char := Some_String(i) case Some_Char is when "0" => Return_Value := Return_Value + 0; when "1" => Return_Value := Return_Value + 1; ... when others => null; end case; end loop; return(Return_Value); end function Version_String_To_integer; KJ [/QUOTE]