Try adding:

Application.volatile

to the top of the procedu

Function TOTAL_VISIBLE(rng As Range) As Long
application.volatile

.....


This tells excel to recalculate the function whenever excel recalculates.

If I recall correctly, some versions of excel won't recalc when columns are
hidden/unhidden--maybe all versions??? (Changing the columnwidth--not
hiding/showing--causes a recalc in xl2003, though.)

So for UDFs like these, you'll want to force a recalc before you trust the
results.

starguy wrote:

what should I do now...problem persists.

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Dave Peterson