Please consider implementing the use case you are looking for using a LivePage.
You will just need to include one wiki script on your page to refer to properties like current iteration id, name, start and end. You can also find there support for current release properties and it is so easy to extend it to maintain more project properties on one place.
- Create a wiki page Settings in your project
- Include it on your wiki page: #includeForm("Setting")
- And refer to properties eg.:
We are working on iteration: $iterationName\\