The last Reflection scripts I wrote were about 6 years ago, but maybe the syntax
hasn't changed. To move the cursor to a particular row & column, use

Application.MoveCursor <row>,<column>

as in the following code fragment:

'enter the ICST function at row 1, column 8
Application.MoveCursor 1, 8
Application.TransmitANSI "ICST"
'enter item 69100 to select the user's specified cost type.
Application.MoveCursor 2, 8
Application.TransmitANSI "69100"
Application.TransmitTerminalKey rcIBMEnterKey
Application.WaitForEvent rcKbdEnabled, "90", "0", 1, 1
Application.WaitForEvent rcEnterPos, "90", "0", 7, 48