EOC control bindings axis names issue

Can someone please help me with the EOC names for joystick axes? I am trying to map a thrustmaster run’n’drive gamepad which has 7 axes; the 7th axis is listed as “Slider 0 Axis” for the gamepad (all X,Y,Z,RX,RY,RZ axes are already mapped). EOC doesn’t recognize JoySlider0Axis, JoySliderAxis, etc and I was wondering if the axis names in EOC were limited to the 6 axes already stated or if there was a way to find the correct name to map this axis.

Thank you for your help