ConstraintLayout with databinding

Is it possible to do something like this:

Xml:

        <android.support.constraint.Guideline
             app:layout_constraintGuide_percent="@{viewModel.guidelinePercent}"
        />

ViewModel:

  @Bindable
    public float getGuidelinePercent() {
        return condition ? 0.6f : 0.8f;
    }

I'm getting this error:

Cannot find the setter for attribute 'app:layout_constraintGuide_percent' with parameter type float on android.support.constraint.Guideline.

I've tried with BindingAdaptor but it doesn't change the value:

ViewModel:

@BindingAdapter(value = {"constraintPercent"})
public static void setConstraintPercent(Guideline view, float percent){
    ConstraintSet constraintSet = new ConstraintSet();
    constraintSet.setGuidelinePercent(view.getId(), percent);
}

Xml:

<android.support.constraint.Guideline
                 app:constraintPercent="@{viewModel.guidelinePercent}"
            />

Any thoughts?
Thanks.