As you may have already noticed from the "Field Types" tutorial, each "Question" within an A2J Guided Interviews® can collect various sorts of data using an appropriate "Field" for each piece of data collected. Fields are broken down into "types" to correspond with a desired format for collecting the data.
In addition, each Field collects data using a "Variable". Variables are assigned "types" as well, according to how the data will be used within the A2J Guided Interviews® and the corresponding HotDocs template. (Variable type information can be found in the Variable Information "window" by double-clicking on a variable name on the variables table located under the Variables Tab.)
It is important to note that each Field Type in A2J Author® corresponds with a particular Variable Type, and that, if necessary, Variable Types can be modified in the Variables Table under the Variables Tab to correspond with the HotDocs variable type.