ZCC text to speech to spell out collected digits

found the answer, include the variable within {{ }}

I also searched for the same thing, but what I also found was that you can set a variable to have more then one content. When it comes to displaying the variable, you can use the order the variable is saved. For example, this is a normal use of the variable {{DisplayName}}, when the variable has a second content, it can be extracted by using  {{DisplayName[2]}}. (This is probably common Jason scripting knowledge.) I hope this helps.