Radio Button - Qt designer and QGis

[magana71]

Hello
I created a form with the Qt designer to associate with the QGIS, but I encountered the following problem:
I created two Radio Button to characterize the gender (male and female) and put them into a Group Box My doubt is how do I associate the Radio Button to the attribute table of shapefile created in QGIS? I tried to create fields with the same name of Radio Button, but it did not work.
With Check box have no problems, I put the same field name in the Check box and everything runs smoothly.
Does anyone have a solution?

Best Regards from Portugal
Marco Magalhães