[SOLVED] WiFI LED Binding - LD741

Hi, i bought the following Led Strip with Controller from Amazon

Turn on and off is working perfect. Also the colorpicker is great.

But if i tried to use the dimmer function and also the speed_LED function in the sitemap, nothing happens.

My configuration looks like this:

Switch LED_Buero_power "Power-LED" <light> [ "Lighting" ] {channel="wifiled:wifiled:F0FE6BA6C812:power"}
Dimmer LED_Buero_white "White-LED" <light> [ "Lighting" ] {channel="wifiled:wifiled:F0FE6BA6C812:white"}
Color  LED_Buero_color "Color-LED" [ "Lighting" ] {channel="wifiled:wifiled:F0FE6BA6C812:color"}
Dimmer LED_Buero_speed  "Speed_LED" <light> [ "Lighting" ] {channel="wifiled:wifiled:F0FE6BA6C812:programSpeed"}
        Colorpicker item=LED_Buero_color icon="colorwheel"
        Switch item=LED_Buero_power icon="light"
        Slider item=LED_Buero_white icon="light"
        Slider item=LED_Buero_speed