function event_Let() {
  uses edi;
  char buf[2048];
  char line[2048];
  char val[255];
  Dword Len;
  boolean ParesFlg = true;  
  len = Ziron_ExtractLine(@line, 2048);
  // remove 'let' form line
  strFold(@buf, 4);
  if(ParesFlg)
   { 
      Ziron_ShowMessage(@line);                // show our entire line for debug purpose
      Ziron_GetNextToken();  
      return true;
   }
  else
   {   
      return false;                           // let Ziron handle the line  
   }   
}

Let a = 100;

strFold(@line, 4);

boolean yourvarname;
yourvarname = true;