Pardon me if this is covered elsewhere I have been looking and have had no luck.

So i have built a patch that reads in sound and renders it as image via GEM.
I am triggering (long) GEM render chains (more accurately lots of short ones, one after the other.) using metro what I need to do is control the value (speed) of the metro. I have a controller that sends new specific values on button presses.

[91.55(
|
[100)
|
[metro]

What I want to be able to do is increment or decrement the value by some small amount like 1 or 0.01 triggered by a button press (one button for up and one for down)
I tried taking the counter mechanics from the help documentation and adapting them to little success. Is there some pre-existing atom or standard method that I am over looking.

[0.1(
|
| [-0.1(
|/
[+ ]x[f 100]
|
[metro]

thanks
that gives me a workable solution for my show next week.

hi I used your patch advice. Im using an interface that only sends bang messages essentially, so in this patch I increase the volume in these increments but im struggling to stop the volume from peaking I've set a max on the number box to 1 but that only works when using a mouse is there a way to stop the message boxes from increasing the number box once its reached 1 or in the other direction stop incrementing when it hits 0?
thank you very much

http://www.pdpatchrepo.info/hurleur/Screen_Shot_2014-02-17_at_22.42.24.png

[clip 0 1]

make sure you put the clip after the float, before it loops back into the [+ ]