The fact that Xcelsius does not implement either ISERROR() or ISNA() is of much frustration to many of us – these are indispensable functions when used in conjunction with error-prone functions such as FIND() or MATCH().
Thankfully, there is a work around!
Just use Count()
Say $A$1 is a string: A1 = “hi, world!”
And you want to know if A1 includes the word “hello”. In Excel, you would simply do B1 = IFERROR(FIND(A1,”hello”),””)
But that won’t work in Xcelsius. Instead, use
B1 = COUNT(FIND(A1,”hello”))
which will return 0 if “hello” is not found, and 1 if it is found.
So if you want to use errors in formulas, use Count() instead of iserror():
Count(number) = 1
Count(error) = 0