Google Analytics（分析）设置了自定义维度值

Question

Below, I've set my dimension1 value to dimensionValue . This is a variable that I created above this snippet of code. The code above is a function that generates random number and letter and stores inside the variable dimensionValue , var dimensionValue = (formula for random string...)

In my google analytics, the custom dimension was outputting dimensionValue for each user when I filtered for dimension1 in GA, whereas it should be outputting EE12345 etc.

On this line of code ga('set', 'dimension1', 'dimensionValue'); is dimensionValue written correctly with backticks around it, or should it contain no backticks

function getRChar() {
    return (Math.random() * 26 + 10 | 0).toString(36).toUpperCase();
    }

    var dimensionValue = getRChar() + getRChar() + Math.floor((Math.random() * 9999) * 7);

ga('create', 'UA-XXXXXX-Y', 'auto');
ga('set', 'dimension1', 'dimensionValue');
ga('send', 'pageview');

Answer 1

As Eike explained in the comments:

Drop the quotes. As it stands dimensionValue is interpreted as a fixed string, not as a variable, so you always get the value of the string (which is of course always the same).

Solution:

ga('set', 'dimension1', dimensionValue);