Variable input
The variable input component lets you override an existing variable that has been defined for this analysis document.
On your analysis sheet, it appears as a single input field.
The selected variable will be overwritten with the value that is inserted into the variable field. However, these changes won't be saved globally to this variable (to do so, please refer to the Analysis Settings), the scope of the change is only valid for the user's instance of the viewer.
Configuration
The following configuration options are available:
Placeholder
The placeholder text will be shown in your text field on your analysis sheet.
Please provide a name that can be easily understood by the users of the analysis document, as they can't inspect the affected variables.
Write to variable
Choose the variable, that you would like to work with.
A list of all available variables will show as a drop down menu.
Don't forget to save your settings with 
.