Storing Values with the Assignment Operator (needs to be value of 10)

JavaScript
1

What’s wrong with this?:

var myVar = 11;

// Only change code below this line
myVar-- myVar - 1;

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36.

Link to the challenge:

2

Is this about the same challenge as your other post?