Problems printing error messages during OnInit

[Diane Minshew]

Inputs

input bool                Inp_Trade_Indicator_Signals       = true;     // Enable the use of indicators 
input bool                Inp_iAD0Handle_Enabled            = true; 
input ENUM_TIMEFRAMES     Inp_iAD0_TimeFrame_Period         = PERIOD_D1;     // Accumilation Distribution Timeframe
input ENUM_APPLIED_VOLUME Inp_iAC0_Applied_Volume           = VOLUME_TICK;   // Accumilation Distribution Applied Volume  

  Global Variables

int iAD0Handle;

OnInit()

  if(Inp_Trade_Indicator_Signals == true)
      {
            
             if (Inp_iAD0Handle_Enabled == true) {
                 Print("Accumilation Distribution is enabled");
                 iAD0Handle = iAD(_Symbol,Inp_iAD0_TimeFrame_Period,Inp_iAC0_Applied_Volume); 
                 if (iAD0Handle == INVALID_HANDLE)
                     {
                     Print ("Failed to create handle of the iAD indicator"); 
                     }
   
      }

No message is printed telling me that the indicator is true..

Thanks in advanced