I'm converting some sql server sprocs to Firebird 1.5 (on Linux AS)
and am having trouble finding an alternative to the replace function
to do some basic string replace steps. I did managed to find what
looked like a udf that contained a suitable replacement, rFunc, but
for some reason that particular function doesn't want to work. Many
of the other functions in the same udf do work. I am getting the
error, "number of seconds required" when trying to call the function.

Can anyone suggest an alternative method or help with the error I am
getting from the udf ?

Thanks