hello everyone
i read some doc. for config SIP header, but i can't change the SIP message...
next is my call flow
1 the agent dial 45001 to CUCM and CUCM have a CTI route point to ICM
2 ICM have a script with 45001 , and in the script have a SET node for change the SIP header,like this:

the cript final general a lable to CUCM 45000,next is my script

3 the 45000 to CUCM and the CUCM have a route pattern 45000 to CVP use SIP trunk
4 the lable arrive CVP and i wireshark the INVITE packet there no change ....but have a runregonised SIP header error.....

5 i config in CVP

6 the CVP pass the 45000 to ICM and run a script ,in the script have a SET node send the SIPHeader to CVP

7 in CVP script log ,i never receive the header....why????
whether i need another config for ICM CUCM and CVP???