Unable to register images for plug-in steps for bulk messages (CreateMultiple/UpdateMultiple)

[simon-tooley-t4a]

An exception is generated when attempting to sparkle a plug-in containing an image that has been configured for a bulk message, i.e. CreateMultiple or UpdateMultiple.

The exception is: 'Message property name 'Target' is not valid on message UpdateMultiple.'

[simon-tooley-t4a]

On investigation I've found that the issue exists within the RegisterImage method of the PluginRegistration.cs.

`
switch (stepAttribute.Message)
{
case "Create":
image.MessagePropertyName = "Id";
break;

            case "SetState":
            case "SetStateDynamicEntity":
                image.MessagePropertyName = "EntityMoniker";
                break;

            case "Send":
            case "DeliverIncoming":
            case "DeliverPromote":
                image.MessagePropertyName = "EmailId";
                break;

            default:
                image.MessagePropertyName = "Target";
                break;
        }

`

Making the following change to the switch statement would appear to fix the issue:

default: image.MessagePropertyName = (stepAttribute.Message.ToLower() == "createmultiple" || stepAttribute.Message.ToLower() == "updatemultiple") ? "Targets" : "Target"; break;

[simon-tooley-t4a]

Discovered that CreateMultiple requires the property name of Ids rather than target

[markd-metcash]

I'm seeing this error too, would love to see the PR raised by @simon-tooley-t4a merged into main