<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I didn’t need:<div class=""><br class=""></div><div class="">and the mistake was (as usual) in the compiler output …I changed the code from:</div><div class=""><br class=""></div><div class=""><div class=""><font face="Courier" class="">286 :- func create_mouse_down_event(<b class="">int::in</b>, int::in, int::in, int::in)</font></div><div class=""><font face="Courier" class="">287 = (sdl_event::out) is det.</font></div></div><div class=""><font face="Courier" class=""><br class=""></font></div><div class="">to:</div><div class=""><br class=""></div><div class=""><div class=""><font face="Courier" class="">286 :- func create_mouse_down_event(<b class="">button::in</b>, int::in, int::in, int::in)</font></div><div class=""><font face="Courier" class="">287 = (sdl_event::out) is det.</font></div></div><div class=""><br class=""></div><div class="">and all is well.</div><div class=""><br class=""></div><div class="">I can now review and reflect… and progress!</div><div class=""><br class=""></div><div class="">Thanks again.</div><div class="">Sean.</div><div class=""><br class=""></div></body></html>