What Function takes in Integers and outputs a Date value?

I have a business process that needs to calculate the a date for a record's date field. Users input integers to represent Day. I need to use the current date to capture the year, and month  for example. What should the formula look like to return those three values as a date value in a parameter that I can set into a record's field?

This for reference, does not work:

DateTime([#System variable.Current Date#].Year,[#System variable.Current Date#].Month,1)

I get an error: Parameter "DateDateTimeUtilities" not found