How to give expression for parameter of type system.Image in microflow

Hello Team, I want to add the image to the microflow as one of the input parameter. It is of type System.Image but I don’t know what is the syntax for the expression. can someone tell me the correct syntax?  
1 answers

An image is just an object like other entities in your model. So if your microflow has a System.Image oject called myImage the syntax for the input for the call microflow action in your question would be $myImage