Hi everyone,

I want to put a condition when the state of an invoice change from draft to open 

this is my code :

<record id="invoice_draft_trans" model="workflow.transition">
    <field name="act_from" ref=""/>
    <field name="act_to" ref=""/>
    <field name="signal">invoice_open</field>
    <field name="condition">test_exceptions()</field>
</record>

I wan to know from where i can get the value of ref : act_from and act_to

i need your help guys

kind regards,