My understanding of "skinparam IconIEMandatoryColor" is to change the color of the mandatory attribute in an enterprise relationship diagram as in below code:
@startuml
'https://plantuml.com/ie-diagram
skinparam IconIEMandatoryColor red
entity A {
* id_A
--
attribute_A
}
entity B {
* id_B
--
attribute_B
}
A --|{ B
@enduml

Unfortunately it is not working as the dot stays black. Am I missing something or am I having it wrong?
thx for your support, Holger