Then I do not understand your problem.
Now your code can generate a spiral at given location based on input parameters (% Line, start, end, max radius = max reflection, number of circles = phases). Output - either a complex array (values) or cluster of Real and Imaginary parts. Clustter you can wire to the graph, values are easier to process).
(VI needs some cleaning. You do not need for loops in it - "build array" accepts element, it does not require array of these elements. Passing parameters with local variables if you can replace them with wires is a very bad style).
Make it a subVI and call it, varying any parameter you need.
Do you need it to bounce along line with loop iterations? .Convert loop iteration into % Line and show new spiral every time.
Do you need 3 spirals for 3 different lines? Call this subVI 3 times with 3 different start and end point values.
You can already join multiple clusters into array and show them on one graph, show one Line and these 3 spirals on one graph, not a problem.
