Click a check box or a radio button. This function updates both the value(see setValue()) and the value index(see setValueIndex()) based on the current(non - committed) state of the SignDocField object(not looking at the state of the field in the document).It does nothing for other field types. Adobe products seem to ignore f_NoToggleToOff flag being not set, this function behaves the same way(ie, as if f_NoToggleToOff was set).

public bool clickButton(
	int index
)