Cannot set the checkbox when filling PDF.

[maielo]

Describe the bug Cannot set the checkbox when filling PDF.

To Reproduce I have dumbed the avalaible fields.

$ pdftk some_pdf.pdf dump_data_fields_utf8
---
FieldType: Button
FieldName: Zaškrtávací pole 01
FieldFlags: 0
FieldJustification: Left
FieldStateOption: Ano0
FieldStateOption: Ano1
FieldStateOption: Ano2
FieldStateOption: Ano3
FieldStateOption: Ano4
FieldStateOption: Ano5
FieldStateOption: Ano6
FieldStateOption: Off

trying to set it using :

pdftk
            .input(originalPdfPath)
            .fillForm({
               'Zaškrtávací pole 01' : 'Ano0',
               'Textové pole3' : 'Test using UTF8 field name',
             })
            .output()
            .then(buffer => {

                return buffer;
            }).catch((e) => {
                console.error(e)
            })

• The textfield 'Textové pole3' gets filled (so i guess UTF8 is not a problem)
• the checkbox doesn't, even after renaming it to "field1" etc.

Expected behavior Fill the checkbox

Desktop (please complete the following information):

• Windows 10

[jjwilly16]

Try setting the checkbox value to 'Yes'. See an explanation here.

[icodeforlove]

@jjwilly16 that actually worked