Test for registry
1. question 1? [text name="variable_1"]
2. question 2? [text name="variable_2"]
3. question 3? [text name="variable_3"][conditional field="variable_1" condition="(variable_1).isLess(5)"]
4. question 5? [text name="variable_5"][/conditional]
Total:[calc value="variable_4=(variable_1)+(variable_2)+(variable_3)"]