Well one thing is mIRC won't do on-the-fly calcing like this
  • hadd -s helpreqs %i $hfind(helpreqs,(%i + 1)).data
    hdel -s helpreqs (%i + 1)


Try $calc()
  • hadd -s helpreqs %i $hfind(helpreqs,$calc(%i + 1)).data
    hdel -s helpreqs $calc(%i + 1)