# Paremeter Controls in different scenerios
**URL:** https://qa.fmod.com/t/paremeter-controls-in-different-scenerios/15331
**Category:** Unity
**Created:** [December 19, 2019, 7:38am UTC](https://qa.fmod.com/t/paremeter-controls-in-different-scenerios/15331 "2019-12-19T07:38:26Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@GalAzu](https://qa.fmod.com/u/GalAzu)
#### Post date: [December 19, 2019, 7:38am UTC](https://qa.fmod.com/t/paremeter-controls-in-different-scenerios/15331/1 "2019-12-19T07:38:26Z")
Hey guys,
I feel very limted by the use and control of the parameters,
ill explain what i want to do:
I Move in a tunnel and i want that as long as i progress inside the tunnel the Intensity parameter will slowly rise, insted of putting lots of different triggers throughout the tunnel i just want to make the whole tunnel to be some kind of gardually increase or decrease of the parameter.
hope i was understood.
thank you very much!
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### Author:  [@alexzzen](https://qa.fmod.com/u/alexzzen)
#### Post date: [December 19, 2019, 11:44am UTC](https://qa.fmod.com/t/paremeter-controls-in-different-scenerios/15331/2 "2019-12-19T11:44:05Z")
You could:
1. Place the Event at the start of the tunnel and use the built-in distance parameter to control the intensity of the Event. Here your intensity should increase when the distance parameter goes up.
2. The same as above, but put the Event at the end of the tunnel instead. Here your intensity should increase when the distance parameter goes down.
Distance parameter docs: [https://fmod.com/resources/documentation-studio?version=2.0&page=parameters-reference.html#distance](https://fmod.com/resources/documentation-studio?version=2.0&page=parameters-reference.html#distance)
This would work in a very basic way, not taking into account player’s verticality and other stuff.