Adding straight text into specific cells in VBA

Need to insert text into specific cells.  To insert into K5 and L5, I understand this code to be:
    Range("K5").Select
    ActiveCell.FormulaR1C1 = "Text1"
    Range("L5").Select
    ActiveCell.FormulaR1C1 = "Text2"

In my program, I need to specify the wkst, so I'm using:
    xl.Worksheets("Sheet3").Range("K5").Select
    ActiveCell.FormulaR1C1 = "Text1"
    xl.Worksheets("Sheet3").Range("L5").Select
    ActiveCell.FormulaR1C1 = "Text2"

However, when it runs, it just shows up with these cells selected but with no text in the cells.  Suggestions?