How to use a function I created inside integral function (int)?

I have created a function for calculating certain values according to my input. I need to use both the calculated value and the input in a definite integral. How can i do so? I tried the following:-

int(((6-y)*([~,~,~,T,~,~]=FlowArea_Jun29_01(y,CSAll{1,1},mindepth(1),SZ(1)))),y,0,6);

to which i got the error:-

Error: The expression to the left of the equals sign is not a valid target for an assignment.

[KSSV]

First you take the outputs from the function FlowArea_Jun29_01 into some variables and then you input these into the function.

[Stephen23]

int(((6-y)*([~,~,~,T,~,~]=...

is not MATLAB syntax. You can learn MATLAB syntax by doing the introductory tutorials, which are highly recommended for all beginners:

https://www.mathworks.com/help/matlab/getting-started-with-matlab.html

[Anav Vora]

@KSSV but the output of this function changes for different values of y as this is an integration. Its not possible to save in a variable outside as far as i know.

[KSSV]

That's where loops and arrays come into picture.