Invalid student response data

[paulstevendev]

One of the LMS systems we are testing on is displaying an error for the matching question component

Your environment

Testing on Windows 10 Chromes PC

Steps to reproduce

Submit the answer to the matching question

Expected behaviour

I would not expect to get an error

Actual behaviour

An error appears saying "Incorrect Data Type"

Via dev tools the following:
16:40:50.462 ScormWrapper::setValue: _property=cmi.interactions.0.type _value=matching
16:40:50.557 ScormWrapper::setValue: _property=cmi.interactions.0.student_response _value=2.3,3.2,1.3
16:40:50.656 Unable to set cmi.interactions.0.student_response to: '2.3,3.2,1.3' Error: 405 - Incorrect Data Type LMS Error Info: For the 'cmi.interactions.0.student_response' data model element an incorrect value was submitted. Incorrect value: '2.3,3.2,1.3'.

Screenshots (if you can)