look for this fir the left on
Texture = "bl1"
Justification = "2"
PickRegion = "10 6 32 32"
MsgXPress = "OnIge_BS_BS_SC_ToggleL1"
and this for the right one
Texture = "br1"
Justification = "0"
PickRegion = "36 6 32 32"
MsgXPress = "OnIge_BS_BS_SC_ToggleR1"
Texture = "bl1"
Justification = "2"
PickRegion = "10 6 32 32"
MsgXPress = "OnIge_BS_BS_SC_ToggleL1"
and this for the right one
Texture = "br1"
Justification = "0"
PickRegion = "36 6 32 32"
MsgXPress = "OnIge_BS_BS_SC_ToggleR1"