Hi @Jmir
I hope you are doing well!
In this case each FTM as an independient counter, called FTMx_CNT, where the x stands for the number of the FTM module, for example FTM0_CNT, FTM1_CNT, FTM2_CNT.
Additionally, You can take a look at our SDK examples for FTM from our MCUxpresso SDK! and if you like, you can use our Config tools to generate initialization code for the FTM.
I hope this helps.
Diego.