Creation of new Cross Section Cells

Hello,

I was hoping someone could help me with trying to get a new cell used in the create cross sections tool.

Under the "Corridor Modeling" tab, 

Using the "Create Cross Sections" Tool

From the "Sheet" Folder

There is an option to utilize the "Cell Name:" this is to select and use a cell that has been created for the cross sections.

I was wondering how I am able to import a new cell name from a cell that I have created to show up in the drop down list of options?