Hi Meirve,<br /><br />I'm not sure if you are familiar with the XML Source so here are the steps to follow to set the radio button size property:<br /><br />1. In the Body Pages, select the radio button.<br />2. Go to the XML Source tab. If the tab is not displayed, right-click the Body Pages tab and select XML Source.<br />3. In the XML Source, the first line of the radio button source will be highlighted.<br />4. Find the <checkButton> element and add the size attribute. For example:<br /><br /> <checkButton shape="round" size="20pt"><br /><br />5. Preview the form.<br /><br />Cheers,<br />Hélène<br />Adobe Systems Inc.