Identifier not found:Calcular_Posiciones

Hello. I’m new to RAPID programming and I have a problem.
I have written the following code:

MODULE MainModule

VAR num fila := 2;
VAR num columna := 2;
VAR num Matriz{fila,columna} := [[1,1],[1,1]];
VAR num incX := 10;

PROC MAIN()

Calcular_Posiciones (Matriz, incX); <-------- Text error:Missing argument inX

ENDPROC

PROC Calcular_Posiciones( INOUT num Mat{,}, INOUT num inX)

FOR i FROM 1 TO Dim(Mat,1) DO
FOR j FROM 1 TO Dim(Mat,2) DO
!código
ENDFOR
ENDFOR

ENDPROC

ENDMODULE

Can anyone help me?

remove the parentheses

Calcular_Posiciones Matriz, incX;

Thank you.