Converting week.year to month format

Hello experts,
Id like to convert week.year format (16.2017) to month format (April). I am using WEBI 4.2.

Week.Year (current column)
16.2017
17.2017
18.2017

Month (new format)
April
April
April

Anyone knows how I could do that?

Regards, Gilly


guinaba (BOB member since 2017-04-23)