How to get current row using submit button ?

Hello Friends ,
Is there any way i can capture the value of current row by submit button ?
Here is my requirement , i have seeded OAF screen and it has table region one of the column has radio button , the existing
functionality is when ever the radio button is selected and click on submit button ( submit button attached on top of the table region )
other oaf page is getting opened .
Now i wish to restrict the navigation based on some condition , but i don't know how to get the current row using submit button .
Note : there is no Fire Action event for radio button column ? I dont' know how orale is selecting a specific row
Any suggestion please ?
Regards ,
Vamsi

Thanks sushant for your response ,
Well i have tried your approch , i am not getting values for current row .
if (pageContext.getParameter("paApply") != null)
OAApplicationModule am = pageContext.getApplicationModule(webBean);
OAViewObject localOAViewObject1 = (OAViewObject)am.findViewObject("ProjectDatesVO");
if(localOAViewObject1!=null) {
Row DateVoROw = localOAViewObject1.first();
RowSetIterator iterator = localOAViewObject1.createRowSetIterator("iterator");
iterator.setRangeStart(0);
iterator.setRangeSize(localOAViewObject1.getRowCount());
for(int i=0; i<iterator.getRowCount(); i++)
DateVoROw=iterator.getRowAtRangeIndex(i);
String vacancyValue= DateVoROw .getAttribute("vacancyname).toString();
Could you please let me know where i am going wrong
Thanks again ,
Vamsi

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