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Eg 1: Global $exString = '1100' ConsoleWrite("StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF) ConsoleWrite("IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF) ConsoleWrite("IsNumber(" & $exString & ")=" & IsNumber($exString) & @CRLF) MsgBox(0, "Is Numerical ?","StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF & "IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF & "IsNumber(" & $exString & ")=" & IsNumber($exString)) EG2: if treat variable as number it works but value is not correct because i am checking input data is numeric or string: ;Global $exString = 'xx1100' Global $exString = '1100xx' $exString = Number($exString) ConsoleWrite("StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF) ConsoleWrite("IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF) ConsoleWrite("IsNumber(" & $exString & ")=" & IsNumber($exString) & @CRLF) MsgBox(0, "Is Numerical ?","StringIsDigit(" & $exString & ")=" & StringIsDigit($exString) & @CRLF & "IsInt(" & $exString & ")=" & IsInt($exString) & @CRLF & "IsNumber(" & $exString & ")=" & IsNumber($exString))

Shouldn't this return 1? Local $v = (24.60 * 1.3) / 1.23 MsgBox(0,"",IsInt($v)) This returns 1. Local $v = 31.98 / 1.23 MsgBox(0,"",IsInt($v))