Works for me in UE5.5, hope this helps you 
1.Create a parameter as “actor class reference” in BP
2.Get “Actor Property” the parameter, make sure the “Output Attribute Name” is same name
3.Get “Add Attribute”, make sure the “Output Target” is same name
4.Get ”Spawn Actor”, make sure the “Spawn Attribute” is same name, set the template actor class to “None”
Note: Use “A” on selected node to inspect how the point works
