How can I use a global token in a rest service?

Hi Guys,

Im just started in SoapUI and I already use Rest services.

My first rest service is a Login operation, this service generates a token wich works for all the remaining services.

But when I use another rest service, I have to put this token mannually in the header.

Is there any way to put this token like a global variable and update it whenever the service runs?

Regards.