Translations:Expression Manager examples/99/en

Purpose	Validate number of boxes ticked per row
Type	Validation
Example	Question of type "Array Numbers (Checkbox Layout)"
Expression	sum(...)
Description	(sum(Test_A_1, Test_A_2, Test_A_3, Test_A_4, Test_A_5) <= X) determines whether at least X checkboxes in row A are checked. If you want to check all three rows (A, B, C), you can connect the expression using "&&": (sum(Test_A_1, Test_A_2, Test_A_3, Test_A_4, Test_A_5) <= X) && (sum(Test_B_1, Test_B_2, Test_B_3, Test_B_4, Test_B_5) <= X) && (sum(Test_C_1, Test_C_2, Test_C_3, Test_C_4, Test_C_5) <= X)
Steps	Create/edit question of type "Array Numbers (Checkbox Layout)". Insert the above expression into "Question validation equation" at the advanced question settings (you might have to adjust variable namings!).
Sample File	Validate number of boxes ticker per row for an Array (Numbers) Checkbox.lss