Amos Error: There are no observed variables in the model. Please help

#1
Hi guys. I'm using AMOS 20 to create a diagram for my pattern matrix. I got the data, but when I copy the matrix into Amos and click Create Diagram, it shows this error message: "There are no observed variables in the model. That is, none of the variable names in the model specification could be found in the data file." Please help.