My project have some problem whith <pCCUsed> in .uvproj

My project have two code in .uvproj:

<pArmCC>5060422::V5.06 update 4 (build 422)::.\ARM_Compiler_5.06u4</pArmCC>

<pCCUsed>5060422::V5.06 update 4 (build 422)::.\ARM_Compiler_5.06u4</pCCUsed>

then when I debug my code, it can't out of the while Loop,

           while(rx_over_cnt > 22);

I see the variable (uine8_t) rx_over_cnt is 0 in watch1 window.

I use git to find the different about my project, then I delete <pArmCC> in .uvproj.

After that, the while Loop is work.

So I have two question:

1.  What is <pArmCC>?

2. Where is <pArmCC> in Keil UI window?