Undefined variable with API-OPENDSS

My Code:

clear all

clc

C_banco=0;

C_GD=0;

C_RT=0;

% addpath('C:\Users\andre\Downloads\dss_matlab_v0.13.4_win_x64\dss_matlab');

addpath('C:\Users\affon\Downloads\dss_matlab_v0.14.1_win_x64\dss_matlab');

DSS = DSS_MATLAB.IDSS;

% access useful objects from the modified grid structure

Text = DSS.Text; % Text interface

Circuit = DSS.ActiveCircuit; % Active circuit object

Solution = Circuit.Solution; % Solution object

Bus = Circuit.ActiveBus; % Active bus object

Loads = Circuit.Loads; % Loads object

Gen = Circuit.Generators; % Generators object

Lines=Circuit.Lines; % Lines object

Trafos =Circuit.Transformers;

Meters = Circuit.Meters;

Reduce = Circuit.ReduceCkt;

Capacitors=Circuit.Capacitors;

RegCtrls=Circuit.RegControls;

if C_RT==1

%Text.Command = 'redirect (C:\Users\andre\OneDrive\Simulacoes\Todos\VL_T1\sistema23b_diario_2.dss)';

Text.Command = 'redirect (C:\Users\affon\OneDrive\Área de Trabalho\OpenDSS\Material_Andrei\sistema23b_diario_2.dss)';

else

%Text.Command = 'redirect (C:\Users\andre\OneDrive\Simulacoes\Todos\VL_T1\sistema23b_diario.dss)';

Text.Command = 'redirect (C:\Users\affon\OneDrive\Área de Trabalho\OpenDSS\Material_Andrei\sistema23b_diario.dss)';

end

Text.Command = 'New Energymeter.M1 Line.L0 1';

Solution.MaxControlIterations=1000;

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I'm using this API (https://github.com/dss-extensions/dss_matlab) to do the communication between MatLab and OpenDSS. The error that is shown:

Undefined variable "DSS_MATLAB" or function "DSS_MATLAB.IDSS".

Error in Dados_Base23b (line 12)

DSS = DSS_MATLAB.IDSS;

I don't know what can be wrong, because i've already set the correct path to this folder. I appreciate if there is somebody who knows what's going on.