Multiple Dropdown Filter Not Plotting Correctly

[Suchi]

To plot a dynamic graph with drop down

Here, is my data-set I’m getting really very confused while coding the drop down for graphs i want my dropdown button to show equipment names and when i click on a particular equipment it should show that particular equipment on graph with the dates and also should show the total number of days between that same equipment for example if abc is a equipment been greased in moth of feb 19 and that same equipment is been greased in the month of march 19 it should calculate and show mw the total num…

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and i just want one dropdown
im getting the output but my dropdown is not interacting with graph