trouble with FLAGs

[Bruce]

Try something like this.

IF Switch = 0 Then
    Flag = ~Flag           ' Invert Flag bit
    WHILE Switch = 0   ' Wait for button release
    WEND
ENDIF

This allows your Switch test routine to control toggling the Flag bit + Switch debounce. Then do whatever you need afterwards based on the Flag bit logic state.

Note: Be sure to use a pull-up on your Switch input, and release the Switch quickly to avoid hanging in the test routine or odd results with a floating input.