Adding Speed to onTriggerEntered

Hey there,

iam sitting with a problem i cant figure it out.
i would like to do a box and on hit it will boost the speed of my character for 5 secunds.

i have the box, but i dont know how to do it. iam really lost on this stage. I hope someone can teach me and show me how to do it.

you have to take a variable for calculate your speed manually it will help you
can please text your script on your question.