I need help with my legend

I dont know whats wrong with this. Its not working. Im trying to get the 2 user inputs in the legend.

legend(app.Axes2,[userinput +' '+['Obesity','Drug','Alcohol','Smoking']],[userinput2,+' '['obesity','drug','alcohol','smoking']])

[Star Strider]

What result do you want?

What information is in the plot?

What are the ‘userinput’ variables, and what do you want the legend (and plot) to look like?

[Adam Danz]

Possibly a duplicate:

https://www.mathworks.com/matlabcentral/answers/648183-need-to-to-put-input-from-user-in-the-legend