Add User data from Joomla

You can import actual logged-in user data from your Joomla to your form configuring 'Value' field on your input Text or Hidden.
Type '#External:' followed by the data from user you want to get. Here is a list of data available with the value to use:

• Id: #External:id
• Name: #External:name
• User Name: #External:username
• Email: #External:email
• Groups (separated by espaces): #External:groups

Note that you'd need to install this Joomla component and publish the module with the calculator id following the instructions in Joomla Backend => Components => XLSJuice.