adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-BUSINESS","nativepaywallcategory" : "NATIVE_PREM-BUSINESS"};This week could mark a milestone in the seven-year history of the Columbus Commons development plan. On Tuesday, the Downtown Commission is set to consider final approval of a second mixed-use building on the site called Two25 Commons. If passed, the project would become the final piece in the redevelopment of the former Columbus City Center site.