Need help with a Variable on my Blueprint

Hi guy i hope anyone can help me with my problem.
I have make a new Grenade and i have insert a timer function on my grenade blueprint. This is my WeapGrenade blueprint:

https://forums.unrealengine.com/filedata/fetch?filedataid=128423&type=thumb

This works fine. But in my Projectile blueprint i can’t set the timer from the other blueprint.
If i Throw the grenade it don’t explose. And here i need help i must use the variable with the timer in the other Blueprint.
I think the varible is empty in the other Blueprint and i hope everyone can help me with my Problem. This is the second blueprint.

https://forums.unrealengine.com/filedata/fetch?filedataid=128424&type=thumb

In this blueprint i have a damage config and here i need the timer from the other blueprint to set the time to explode.

Thanks for help.