Traffic-policy priority-queue Port Range

Hello Everyone,

Is there a way to specify a port range for the command listed below? Also, if there is a better way to do this any advice would be greatly appreciated. We are trying to prioritize SIP traffic on our network, but DSCP tagging is being stripped by our firewall before it reaches the router which is making things a little difficult.

set traffic-policy priority-queue class 7 match ip source port xxxx-xxxxx