@igwecharles what do mean by "custom block aspect"?
Indicators are usually use for these blocks

or used for values and levels for other blocks

Thanks for the response. Am I doing correctly?

Also, do you know what the little note "Remember: This block needs one of the..." is?

The description says output is "Once when the work is done." What is this "work" exactly? Is it possible to activate the output once, when the trailing start condition is met? I'm trying to activate a block when the price has move 50% of stop loss toward take profit point