Help in making a time recorder

Hi there recently I was working on creating something like stopwatch, that works in gui. I tried to make a start button that when ever the user click it will start to measure the time and when the user re-click it it saves the time value to X matrix and start over again till the user second click, it saves the second value and start the 3rd count...etc. In the end there is another finish button that will end the function of the start button, and create a table of collected data.

but it is not working, I am new to gui and I am not understanding much in it.

I wonder if someone can help create such code, and Thanks in advance.

[Geoff Hayes]

Abdullah - please clarify what you mean by it is not working. Are you observing errors, and if so, what are they? Else please post your code so that we can get an idea of what you have attempted and then we can suggest what you might be able to do to get it to work.