You could run it repeatedly using Ontime, say running it every 1, 2,3 secs
or whatever you choose. In the procedure invoked by OnTime, check if the
value is Y at the end, if so, reissue the OnTime, if not just exit.

Chip Pearson has a nice page on it at
http://www.cpearson.com/excel/ontime.htm

--
HTH

Bob Phillips

(replace somewhere in email address with gmail if mailing direct)

"Tom" wrote in message
...
Hi,

Does anyone know how to do the following :

I want to execute a procedure/sub over and over again repeatedly, but
*only*
if a particular cell in Excel is set to, say, "Y". I have tried using a
simple loop (Do ... Loop Until etc.) but while this runs the code as
wanted,
it completely locks up Excel and stops you from doing anything to the
cells
etc. In other words, there is no way of stopping the code. Also, if I
can
get this principle working then I can also have other adjustable
parameters
for the code using other cells.

Any ideas?

Thanks,

Tom