             
             if unicodeInt == kDecimalPoint
             {
-                if self.text.contains(kDot)
+                if textView.text.contains(kDot)
                 {
                     return false
                 }

        
        let blur:VBlur = VBlur.light()
        
        let viewText:VLinearEquationsPolynomialText = VLinearEquationsPolynomialText(
            controller:self.controller)
        self.viewText = viewText
        
        let viewControl:VLinearEquationsPolynomialControl = VLinearEquationsPolynomialControl(
            controller:self.controller)
        self.viewControl = viewControl

                let firstScalar:UnicodeScalar = UnicodeScalar(firstString),
                let secondScalar:UnicodeScalar = UnicodeScalar(secondString)
                
            else
            {
                return
            }
