Custom Indicator Levels

 
Can I code my custom indicator to apply preset 'levels' to the seperate window when the indicator is applied to the chart?

For instance in the indicator properties dialog, I can pre-define the 'Input parameters' and 'color'. How can I code and pre-define the 'levels'.

tia
 
this feature will be available later. but number of preset levels will be less than 32 (4 or 8)
Reason: