As I am getting you problem, you must be getting only three bars in the chart I think. And if you want to click on any bar and want the dimension to be changed to PARAM1 or else, you can create dimension group.
As per your data that I can see..you have only two dimensions, one is USER_ID and other is MODEL, rest all are your facts. So if you are going to use MODEL as your dimension, and click on any bar, it will not reflect any change on any chart, because the selection you are making is "STANDARD" which is the only value you have in model column.
If you use USER_ID as the dimension and then click on any of the bars..then there will be a change on other chart because you will be selecting a particular USER_ID and the result will be filtered for that only USER_ID.
In this condition, wherever the value is greater than 0, there it will have 'AVG_OFFLINE' and for rest other, i.e. for value<=0, it will have nothing, i.e. '-'.
So now your ONOFF_SELECT list box will have 2 values, i.e. 'AVG_OFFLINE' and '-' so if you select one of the there will be change when you select '-', because all values less than 0 (negative values) and zero values will come..and if you select 'AVG_OFFLINE' then there will be change, that all the positive values will come, excluding all negatives.