Select cells from function in VBA

I want to have a macro that first activates a particular worksheet and then selects a particular cell. However, when I run the code below I get the following message:

Run-time error:'1004': Select method of Range class failed.

What am I doing wrong?

Function selectingCells(myWs As String, myCell As Range)

    Sheets(myWs).Activate
    myCell.Select

End Function

Sub callingFunction()

    Call selectingCells("Data", Range("A1"))
    Call selectingCells("Picklist", Range("A1"))

End Sub