Cannot turn on 4028 fan with default Pin synthax

The default config I have after doing the setup is :

[fan_generic part_fan_t0]

4-pin fan connected to 2-pin header on T0 (EBB42 v1.2) - digital pwm

pin: !toolboard_t0:PA0
cycle_time: 0.00004

It does not allow the fan to spin up while using the sliding cursor on mainsail.
I made this following modification and it works:

[fan_generic part_fan_t0]

4-pin fan connected to 2-pin header on T0 (EBB42 v1.2) - digital pwm

pin: PA0
cycle_time: 0.00004


However, Isame issue occurs for toolhead #1 and if I try again to use the PA0, it through an error as the pin is already used (in the code)

I am not sure where I am wrong.
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Solution
OK, Sorted now. On the JST PH2 connector, I inverted the polarity.
Now I am controlling the 2pin fan via PWM on the Kraken. T0 is plugged to PA0 and T1 to PA1.
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