I have a “Users can edit as text box” option in a dynamic component assigned to a variable optionVar. But if the user deletes the text from the text box and clicks on Apply, the optionVar becomes undefined and any operation that uses it becomes an error (red hashtag). For example, these cause errors if the user deletes the text, but the errors disappear if the user enters any text at all:
myVar =IF(LEN(optionVar)=0, “My Default String”, optionVar)
So, I need something like ISDEFINED(optionVar). Any ideas?