In addition, two things which will cause you problems later:

• You are defining the function  sendm with a prototype that declares no arguments will be passed: the empty parentheses after the function name in
      sub sendm() { ... }
  Don't use prototypes until you are sure you know what they are for.
• You are calling the function  sendm with the  & sigil. This disables prototype checking. Don't use this method of subroutine invocation until you are sure you know what it is for. Instead, call the subroutine just as
      sendm($var1,$var2);
  (but without having used a prototype – and certainly not an empty argument list prototype – in its definition).

Update: Changed wording, layout to improve clarity.