Errors when I'm making my own hdr skybox

Thanks. I just dropped my texture in the blueprint as he did in the video so I didn’t see that it’s not the same kind of parameter. I put the parameter manually and when I gave to it my texture, I got the following error message :

[SM5] (Node TextureSampleParameterCube) ParamCube> Found Texture2D, requires TextureCube

Do you know how to convert my Texture2D to TextureCube ?