Undefined function 'matlab' for input arguments of type 'char'.

I got this error, message and can't figure it out. Can anyone check the code below and give me an idea? Thank you

fileName = 'Scenario 1 Results.xlsx';
[numerical, stringal] = xlsread(fileName, 'Sheet1');

Pb = numerical(:,1);
Pa = numerical(:,2);
Profit = numerical(:,5);

plot3(Pa,Pb,Profit)char

Answer 1

[Image Analyst]

The last line should not have "char" at the end. It should simply be

plot3(Pa,Pb,Profit);