Hi Fabricio,
Quite simply, the control point name must be in the picture but the file extension.
Example:
FT0001.JPG 677230.457 9499541.569 853.440
FT0002.JPG 677039.528 9499532.949 853.440
FT0003.JPG 676847.326 9499527.916 856.488
.......
Regards,
Diego