When I turn my file into a G-code it only prints the first layer.

[z6be 0]

I am using Cura to get my prints ready for printing. I have an Ender-3 and can only print g-codes, so I convert the print (that has already gone through Cura) into a g-code, and my printer only prints the first layer of the print. I tried turning it into a g-code and then looking at the print in Cura and in Cura the print is only the first layer also. What is wrong? How can I convert my prints into a g-code and keep them the way they were before I converted them to g-code? Please help. 

[gr5 2,210]

Cura outputs gcode.  Not sure how you are converting.  On the bottom right is the button to slice it, then the same button can be used to output the gcode.