How to enable third button cheat in final fight Mame?

In Mame we have a third button that simulates pressing punch and jump at the same time

However, it doesn’t work at all. I mean I press Joy 1 Button 2 and it doesn’t work. Perhaps because it’s a cheat. Should I do something to the machine to enable it?

Also I put nothing for P1 button 1 that’s because I need autofire.

This is the content of ffight.cfg

<?xml version="1.0"?>
<!-- This file is autogenerated; comments and unknown tags will be stripped -->
<mameconfig version="10">
    <system name="ffight">
        <counters>
            <coins index="0" number="7" />
        </counters>
        <input>
            <port tag=":IN1" type="P1_JOYSTICK_RIGHT" mask="1" defvalue="1">
                <newseq type="standard">
                    JOYCODE_1_HATSWITCHR
                </newseq>
            </port>
            <port tag=":IN1" type="P1_JOYSTICK_LEFT" mask="2" defvalue="2">
                <newseq type="standard">
                    JOYCODE_1_HATSWITCHL
                </newseq>
            </port>
            <port tag=":IN1" type="P1_JOYSTICK_DOWN" mask="4" defvalue="4">
                <newseq type="standard">
                    JOYCODE_1_HATSWITCHD
                </newseq>
            </port>
            <port tag=":IN1" type="P1_JOYSTICK_UP" mask="8" defvalue="8">
                <newseq type="standard">
                    JOYCODE_1_HATSWITCHU
                </newseq>
            </port>
            <port tag=":IN1" type="P1_BUTTON1" mask="16" defvalue="16">
                <newseq type="standard">
                    NONE
                </newseq>
            </port>
            <port tag=":IN1" type="P1_BUTTON2" mask="32" defvalue="32">
                <newseq type="standard">
                    JOYCODE_1_BUTTON2
                </newseq>
            </port>
            <port tag=":IN1" type="P1_BUTTON3" mask="64" defvalue="64">
                <newseq type="standard">
                    JOYCODE_1_BUTTON3
                </newseq>
            </port>
        </input>
    </system>
</mameconfig>

I do not see anything that enables that third button either