ConvertToString() Exception

Hi,

Using ConvertToString() get the following error:

Error: RPAS exception

  Exception Type:         IllegalParse: ConvertToString does not accept positional arguments other than the first argument

I've got the rule:

DateTx = ConvertToString(DateDt, "%Y%m%d")

DateTx - string

DateDt - date

DateTx, DateDt have the same base Intx

Without second parameter it works  -  DateTx = ConvertToString(DateDt)

I checked the docs, "Y%m%d" seems to be a valid format. I also tried some other formats, get the same exception.

What could be wrong?

v15.0.1.1

Andrey.