Training status not updated !??

Hi,

I have Edge 530, Forerunner 735xt and HRM-Tri.

When i ride my bike, i can see Training Load and Training status updated.

But when i run with 735XT connected with HRM-Tri (i have a lot of metrics like 'vertical ratio' etc.) my Load is always 0 ! (even when i run 6k quite fast, or 21km ! , even when Training Effect is Impacting or Highly Impacting ! )

What's wrong ?