Errors when computing the interpolation function

Greetings, COMSOL user.

I have experiencing problems when computing a COMSOL + MATLAB code. The error that occurs (with or without MATLAB) is linked to Interpolation function #1 (int1). The error message says the following:

Messages:
The following feature has encountered a problem

The following feature has encountered a problem

The following feature has encountered a problem:

Failed to evaluate variable.
- Variable: int1
- Geometry: 1
- Domain: 1
I have right paths to the interpolation function which is a .txt file. I have two more functions, but I have no problems with them.

The .txt file I import consists of three columns:
First column is for X-coordinates and second one is for Y-coordinates. It's a 2D geometry. The third column assigns values for the cells created by (X,Y)-coordinates.

I appreciate if somebody could give some advice.

Thanks