Capturing Variable In Offset?

I am trying to make a program and in this program I am trying to use an offset. In that offset I want the column offset be = to a Integer variable I have created but I am getting the "red text".

How can I capture the weeknumber integer, entered into the input box as the second offset variable?

Dim ForumMember As String
Dim ForumMemberRange As Range
Dim ForumMemberLocal As Range
Dim WeekNumber As Integer
'worksheet and book activation
Workbooks("Trivia Point Account").Activate
Worksheets("Game 3").Activate

[code].....