I'll give it a try:
Module Test:
CallSub3(Main, "Detail", Data,"Alarm1")
Module Main:
Sub Globals
Dim txtFirst As EditText
Dim txtSec As EditText
End Sub
Sub Detail(first As String,sec As String)
Activity.LoadLayout("detail")
txtFirst.Text=first
txtSec.Text=sec
End Sub
both txtFirst and txtSec are EditText on layout "detail"