Adding Data Validation On Multiple Sheets Using Vba

I have multiple sheets (Sheets "A", "B", "C", etc) with the same structure and formatting. For these sheets ("A", "B", "C", etc.), I want to create dropdown lists in column F (cells F2:F100) based on values from a different worksheet (Sheet "DropDown", Cells "B2:B130").

I saw a previous post [URL]... which had a single sheet example. I am trying to come up with vba code for multiple sheets and so far it's not working.

VB:

Dim wkst As Worksheet
For Each wkst In ThisWorkbook.Sheets
ThisWorkbook.Names.Add Name:="listdata", RefersTo:= _ "=dropdown!$B$2:$B$130"
With wkst.Range("F2:F100").Validation .Add Type:=xlValidateList, AlertStyle:=xlValidAlertStop, Operator:= _
xlBetween, Formula1:="=listdata"
End With
Next
End Sub

I am a beginner with vba coding