Crystal report formula field

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CrystalReports

In my crystal report i have to show the Sum of five columns so i am using formula field I want where clause how to achieve that because i have many records in db i want to filter based in country for example see below

to show a column as Total(containing four columns such as SUM({QuestionTarget.QuestionTarget})+SUM({QuestionTarget.QT_FormMen})+SUM({QuestionTarget.QT_ForWomen})+SUM({QuestionTarget.QT_ForGirl})+SUM({QuestionTarget.QT_ForBoy}))

My table has these four columns along with another column name country so I want to sum of these four columns Based on country ID how to write the formula