GPIO J7 multimeter test point

Hi guys,
from a serial terminal I was able to set:

dwm> gs 14
gpio14: 1
dwm> gc 14
gpio14: 0

According to DW1000 datasheet, gpio 14 is linked to J7 pin 5.
However I couldn’t verify by a multimeter any voltage changes.
Any ideas?

Sorry guys,
my mistake…

For some reason J7 mapping M_PIN_14 is not GPIO_14… but I2C_SDA!

So J7 header gives access to GPIOs 12, 13, 23, 27.