Which error do you get?
The following code runs fine:
B4X:
Sub Globals
'Declare the global variables here.
Dim station(3)
End Sub
Sub App_Start
station(0) = "a" : station(1) = "b" : station(2) = "c"
Sql = "Insert into TVG (Ndx, Name, Sat, ...) Values('" & _
Station(0) & _ 'Station Index
Station(1) & _ 'Station Name
Station(2) & _ 'Station Sat
"')"
Msgbox(sql)
End Sub