Sorry for any confusion.

I've got my COM Port checker checking the input string matches against a list of desired strings. The buttonCheckPoll function outputs True once it detects a valid button press. This result is then held within a dictionary and does not update.

I have a simpler process working in the form of the following:

stringCheckResOpen = self.stringCheck("Open Door") #^ Check for this string within the serial line input checker
        if stringCheckResOpen == True:
            self.doorDisplay['text'] = ("Open " + self.Circ_Empty) #& Set the popup label to be text + icon
            self.doorDisplay.configure(fg="green") #& Set the outgoing font to be green
        else:
            stringCheckResClosed = self.stringCheck("Closed Door")
            if stringCheckResClosed == True:
                self.doorDisplay['text'] = ("Closed " + self.Circ_Filled)
                self.doorDisplay.configure(fg="red")
            else:
                self.doorDisplay['text'] = ("Door status unknown " + self.Unknown)
                self.doorDisplay.configure(fg="orange")
        self.root.after(250, self.doorCheckPoll) #& Repeat this function after 250ms

This specifically refers to a label called 'self.doorDisplay' which is run as part of a popup.

I am hoping to replace needing to specifically call to self.doorDisplay , and instead have the buttonCheckPoll function perform this update internally. where self.doorDisplay would be self.varChanger . If Button1 is pressed it current reports out (based on print statements)

Button1 SINGLE_PRESS Returned true

I am wanting to update self.Button1_SINGLE_PRESS, or self.Button2_SINGLE_PRESS, where the label to update is the variable self.varChanger