Invalid 'for' loop control variable
You created a For...Next loop that has the same control variable as a loop it is nested inside. Alternately, you may have created a For...Next loop with an illegal control variable. The following demonstrates the correct structure of a For...Next loop.
For counter = start To end [Step step]
[statements]
[Exit For]
[statements]
Next
To correct this error
- Rename the control variable in your For...Next loop to something unique within the scope of the outermost loop.