Minishop order search form

is there any way to change order search form in modx–>minishop2–>orders in order to have the possibility to search orders giving the phone number?
by default you can search by

  1. number,e-mail,comment
  2. by customer
  3. by context

Thank you in Advance

Guys please i need your help here. I have search almost everything i could and i cant find a way to change current filter or to add a new one.