Getting error message when referencing a variable using values.myVariable without using the variable on its own first

[kanserh]

If you use reference a variable using values.myVariable without using the variable first on its own, you get a red error flare message indicating the variable hasn't been used. An example is the code below where you want to show the variable with thousands separator by converting to Locale String. (Note, you also use this notation when performing math on the variables.)
Example: {[( values.userCount).toLocaleString()]}

This can be fixed by changing the format of the variableName variable. See below.

Replace this line:
var variableName = Ext.String.format("{{0}}",c.id);

With this line:
var variableName = Ext.String.format("{0}",c.id);