Dynamic chart with changing dates and N/A

[Pascal Oleva]

Hello all,

New member and first-time poster so bear with me. please.
I have a fairly large piece of training data. The end goal I have is to create a dynamic chart where I could insert two dates in cells for the corresponding time frame I’d like to investigate and then choose with a ticked box what metric to see.
There a log date corresponding to exercise done on that day. Usually there are many exercises per day, so the date column isn’t consistent.

Now the information I’d like to see in the chart is in many columns but I’m trying to get one thing to work first and then expand…
Let’s say I want a view of my development for my Bench estimated one rep max or e1RM (column DE). The e1RM column is a formula as to filter out the rest of the movements per week.
What would be the best way to make a chart where I could with two cell inputs create the range I want to see for the development of my e1RM?
I though a dynamic chart would be the answer and stumbled upon:

Youtube:
Excel Dynamic Chart Range based on Cell (drop-down) Value for dashboards

but when I get to making the index function for the e1RM column I get #N/A as a result… it doesn’t help if I change the formula in column DE N/A=>”” since it seems that the index function doesn’t like functions.
What should I do? How should I change my chart to be able to do this? Is my thinking completely wrong and I should be doing this a different way?
I apologize for the long post, but I didn’t know how to explain it any shorter. Any help is highly appreciated.

Pascal