# Control NT Service failing - FB7
**URL:** https://www.finalbuilder.com/forums/t/control-nt-service-failing-fb7/2027
**Category:** Discussion
**Created:** [September 6, 2012, 9:04am UTC](https://www.finalbuilder.com/forums/t/control-nt-service-failing-fb7/2027 "2012-09-06T09:04:54Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@deleted\_user](https://www.finalbuilder.com/forums/u/deleted_user)
#### Post date: [September 6, 2012, 9:04am UTC](https://www.finalbuilder.com/forums/t/control-nt-service-failing-fb7/2027/1 "2012-09-06T09:04:54Z")
Hi, I'm having trouble using the Control NT service action in FinalBuilder 7.
I have project level variables set, so this is how it looks:
Service Name: %ServiceName%
Computer name: %ServerBaseName%%CurrentServer%
ServiceName equates to "Usage Data Service" and ServerBaseName is "WEBTEST" and CurrentServer is an integer depending on which iteration of the loop it's in.
When I try to run just the action, it errors out and says that "The specified service does not exist as an installed service". I am pointing this to Windows Server 2003 machines, the service is installed on each of them, and I even copied and pasted the service name to make sure I didn't have a typo. I've tried it with and without "" marks around the variable. I can run a command line "sc stop" without any problems.
Help! :)
---
### Author:  [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [September 7, 2012, 1:20am UTC](https://www.finalbuilder.com/forums/t/control-nt-service-failing-fb7/2027/2 "2012-09-07T01:20:09Z")
Hi Andy
I just tried it here with a server 2003 machine from my windows 7 machine and it worked fine. You need to use the ServiceName, and not the DisplayName of the service. The ServiceName will not have spaces in it.