title: formula to count how many instances of a row occur with one cell containing a string and the other having its entire content equal to another string
body: <p>I would like to count the number of times that the cell BN in my spreadsheet contains the string "FP_T" AND the cell BO of the same row contains the string "Step3CallerAndCalleeClassTracesImpliesMethodTracePattern". In other words, I would like to count how many times a row like the one highlighted in yellow and shown in the following picture occurs: 
  <a href="https://i.stack.imgur.com/k6NIS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/k6NIS.png" alt="enter image description here"></a></p>
  
  <p>I tried to use the formula: =COUNTIFS($BN$:$BN$,"FP_T",$BO$:$BO$,"Step3CallerAndCalleeClassTracesImpliesMethodTracePattern") but it's not working. Note that the cell BN contains the string that I am searching for (FP_T) while the cell BO has its entire content equal to the string that I am searching for.</p>