svn check out

If I am transfering a folder from svn location to my unix server with below command, it is working �

svn co svn+ssh://bcvxsvxxnp01.corp.ocwen.com/svn/repos/repos/REALResolution/CalcEngine/CalcEngine\ QA/1852011_CalcEngine_v5.1

But when I do below thing �

new_svn=�svn+ssh://bcvxsvxxnp01.corp.ocwen.com/svn/repos/repos/REALResolution/CalcEngine/CalcEngine\ QA/1852011_CalcEngine_v5.1�
svn co $new_svn

below error message comes �

svn: URL 'svn+ssh://bcvxsvxxnp01.corp.ocwen.com/svn/repos/repos/REALResolution/CalcEngine/CalcEngine%5C' doesn't exist

Please give your valuable suggestion here. Because it is necessary to assign that path to a variable and then using it.