I have no experience with JSON.  I am trying to change the swap the variable inside a clause based on certain conditions.  I cannot get this to work.  Placeholder starts out empty.  Based on conditions, I update placeholder with var 1 or 2.    
if (AM_DRV_templateId == 'AM_APPEALS_PARTIAL_APPR_OR_DENIED_FULL' &&     (AM_DRV_levelOfAppeal[SYS_TableRow-1] == 'First and Final' || AM_DRV_levelOfAppeal[SYS_TableRow-1] == 'Second and Final'))
{
Appeals_Placeholder_Final_Adverse == Appeals_FinalLvlAppeal_Final_Adverse;
return true;} 
else 
if (AM_DRV_templateId == 'AM_APPEALS_PARTIAL_APPR_OR_DENIED_FULL' && (AM_DRV_levelOfAppeal[SYS_TableRow-1]== 'First of Two Mandatory' || AM_DRV_levelOfAppeal[SYS_TableRow-1] == 'Voluntary Internal' || AM_DRV_levelOfAppeal[SYS_TableRow-1] == 'External Review'))
{
Appeals_Placeholder_Final_Adverse == Appeals_Not_FinalLvlAppeal_Adverse';
return true;} else
return false;
thanks