如何在LESS中将值传递给变量？

Question

I'd like to pass a value to a variable in LESS. How can I do this?

Here's some sample code. I'd like to pass the values in .className() to the variable @varValue .

@defaultWidth: 10px;
.className(@varValue: 1) {
    width: (@defaultWidth * @varValue);
    background: green;
}

.sample {

    background: blue;
    height: 10px;

    .filled_1     { .className(1); }
    .filled_2     { .className(2); }
    .filled_3     { .className(3); }
}

Example HTML:

<div class="sample">
    <div class="filled_3"></div>
</div>

Answer 1

As Guy Morgrabi stated in the comment above, it's an issue with different LESS compiler versions. Guy should get the credit, but for the others visiting, you should know the answer.