Panasonic TV Binding chanel item

Hi to all,
i use the the panasonic tv binding.
But there is a problem by using the Channel and volume items.

My question to you how did you implement the control?
Especially the theme of Chanel up and down with two switches is quite stupid.i think it`si better to use some thing like this :
Number TvKanal “Channel [%.1f]” {panasonictv=“wohnz_tv:CHANNEL, INCREASE:wohnz_tv:CHUP, DECREASE:wohnz_tv:CHDOWN, *:wohnz_tv:CHANNEL” }
but it dosent work.
Or is it possible to set the chanel directly?
How did you solve that?