Using SNES Controller in MAME

Hello. This question as been asked several times but I just can´t play MAME games using SNES Controller.

I have these settings in retroarch.cfg. Both in general and in MAME specific.

input_player1_joypad_index = 0
input_player1_b_btn = 2
input_player1_a_btn = 1
input_player1_y_btn = 3
input_player1_x_btn = 0
input_player1_l_btn = 4
input_player1_r_btn = 5
input_player1_start_btn = 9
input_player1_select_btn = 8
input_player2_joypad_index = 1
input_player2_b_btn = 2
input_player2_a_btn = 1
input_player2_y_btn = 3
input_player2_x_btn = 0
input_player2_l_btn = 4
input_player2_r_btn = 5
input_player2_start_btn = 9
input_player2_select_btn = 8

# Menu buttons.
# menu_ok_btn          =
# menu_cancel_btn      =
# menu_search_btn      =
# menu_info_btn        =
# menu_default_btn     =
# menu_scroll_down_btn =
# menu_scroll_up_btn   =

# Axis for RetroArch D-Pad. 
# Needs to be either '+' or '-' in the first character signaling either positive or negative direction of the axis, then the axis number. 
# Do note that every other input option has the corresponding _btn and _axis binds as well; they are omitted here for clarity.
input_player1_up_axis = -1
input_player1_down_axis = +1
input_player1_left_axis = -0
input_player1_right_axis = +0
input_player2_up_axis = -1
input_player2_down_axis = +1
input_player2_left_axis = -0
input_player2_right_axis = +0

I can play everything using the controller, except MAME games.