Can I make the title field display a value without clicking into it?

Hello,
I have a title field which displays the values from two drop down fields ('value1 - value2'). When I choose the values from the two drop down fields, I have to click into the title field and click on any button so that the title field displays the combined values. Is there any way to make the title field display the values automatically without the need to click into the field ?
It would also be fine if the title field is displayed as soon as I save the ticket.

Thanks, Yücel

Hello, Yücel! Do you mean a default 'Title' field?