How to copy string field value to reference field in business rule

[AnilM99]

Hi all,

I created 'ticket_number' (string filed) - in incident table

I want to copy the 'ticket_number' number to reference field.

I am using BR code like the below

current.instance = current.ticket_number;

it is working but record is not visible 

[AnilM99]

Hi all thanks for the reply, 

actually that was not 'reference' field that was "Document ID" field.

sorry for the typo error.