TimerFcn in functions

Hi,

I am trying to use a TimerFcn from within a function. The function does not
require or return any values, so it could also be run as a script, but for
performance reasons I think I need it to be a function file.

If I run the file as a standard script file, the timer works as expected.
But when I turn the script file into the function that it should be, the
timer cannot be run.

The timer is supposed to update a wait bar every two seconds in relation to
the amount of data (ftell position inside the data file to be evaluated by
the script/function) processed by the script/function.

t=timer('TimerFcn','waitbar...' etc.)

The timer needs an fid for displaying the wait bar, the filelength of the
datfile and the ftell-position of the file.

The error says that fid is an unknown function/variable.

I have tried to set the fid to global or persistant, but this did not help.

What can I do to make the timer run?

Regards,
Crypto.
.

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