Checkboxes - can't set default value, check state

Hi,

  I am generating a report in pdf with QuickPDF Library and I am trying to add some checkboxes to the report. I can add a checkbox but I can't set it's default value (some checkboxes should be checked when the report is opened). I would also like to use a cross instead of a tick but it ignores anything I put in QP.SetFormFieldCheckStyle parameters.

  Here is the code I am using (in vb.net):

Dim fieldName As String = "chk_1000"
Dim fieldIndex As Integer = QP.NewFormField(fieldName, 3)
QP.SetFormFieldValueByTitle(fieldName, "Yes")
QP.SetFormFieldBounds( fieldIndex , 100, 100, 18, 18)
QP.SetFormFieldCheckStyle( fieldIndex , 0, 1)
QP.SetFormFieldBorderColor( fieldIndex , 1, 0, 0)
QP.SetNeedAppearances(1)

  Strange is that QP.SetFormFieldBorderColor is working and the border is red.

  Any help would be appreciated.