Way to comment out certain entries so they are ignored by Summary?

[Mark Burton]

I have a Number Field with a number entered. I then have a Summary field that displays the sum of all the records where this field has a value.

For some records I want the Summary to ignore (skip over) the value.

Is there a simple way to 'comment out' the value by adding a character of some sort? In crude terms it would be like putting the code lines // in front of the value and as a result, it gets ignored (I know that doesn't work!).

This is only for my internal usage so it doesn't need to be to clever. Just quick and easy to change a value so it gets ignored and change it back later so it gets added in the Summary?

Many thanks

Mark

[comment]

Perhaps this might suit you:

http://fmforums.com/forum/showtopic.php?tid/216548/post/364978/#364978

[Mark Burton]

Perfect - thanks so much for this, exactly what I needed.