Translations:Expression Manager examples/99/en
From LimeSurvey Manual
| 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 |
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