Issues with a Countif

Morning,

I am using the formula =IF(GO2=TRUE,"TRUE",IF(AND(GP2=TRUE,GQ2=TRUE),"TRUE","FALSE")) to give me values of either TRUE or FALSE in the column GR.

However when I use the countif formula =COUNTIF('Y13 Performance'!GR:GR,"TRUE") it doesn't count the TRUEs, or if I change it to say FALSE, those either.

Any help on adapting the formula to count the TRUEs would be greatly appreciated.

Many thanks