Cannot upload excel file into signal analyzer

I am working on EMG signal processing. I have the EMG signal in an excel file after importing it from BIOPAC system. I want to visualize the signal. When I try to import the file into the signal analyzer it shows this:

how can I upload it to the signal analyzer?

[Mathieu NOE]

your confusing a data file and a session file. what the app is asking you is if you want to open a session file , not a excel (data) file

your data must be first loaded in the matlab workspace; use readmatrix or readtable for excel files

then simply drag your data in the display and use the app

(and read the doc : Using Signal Analyzer App - MATLAB & Simulink - MathWorks France)