🚀 go-pugleaf

Hi,
I would like to know more imformation on the use of CanGetRow() event on a
query:
I have a form with 2 table in relation father-child 1:N;
I must in the same table filter the rowset for same fields of the father
table and one field of the child table and the  query do need to be live for
modified it.
I input the filter option in same entryfield object and then i apply the
form.query1.rowset.filter=.... value of entryfiled

How i can do for filter also a field of the child table?? Can i do the
CanGetRow() function?? How i can use it??

Example of may source code:
 this.QUERY1 = new QUERY()
   this.QUERY1.parent = this
   with (this.QUERY1)
      left = 55
      top = -0.0455
      database = form.database1
      sql = 'select * from "calciato.dbf"'
      active = true
   endwith

this.QUERY2 = new QUERY()
   this.QUERY2.parent = this
   with (this.QUERY2)
      left = 65
      top = -0.0455
      database = form.database1
      sql = 'select * from "note.dbf"'
      active = true
   endwith

   with (this.QUERY2.rowset)
      filterOptions = 3 // Lunghezza parziale e ignora M/m
      indexName = "CALNOT"
      masterRowset = parent.parent.query1.rowset
      masterFields = "CALCIAID"
   endwith

 this.FIELD_SER = new ENTRYFIELD(this)
   with (this.FIELD_SER)
      enabled = false
      height = 0.8182
      left = 61
      top = 2.5
      width = 24
      fontName = "MS Sans Serif"
      fontSize = 8
      fontBold = true
      value = ""
      validErrorMsg = "Dato immesso non valido "
      pageno = 1
   endwith

function PUSHBUTTON_filter_onClick
     wnom=trim(ltrim(form.field_ser.value))
     WFIL="observ='&wnom' "

     form.query1.rowset.beginfilter()
     form.query1.rowset.filter=wfil
     form.query1.rowset.refresh()
     form.query1.rowset.applyfilter()
 return

This go only for the input fields of the father table...

How can i do???
Thank's in advanced.
Andrea