Dynamic Material Parameters do not validate after 34.00

General Issues and Bug Reporting
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1

Summary

Cannot add/use Dynamic Material Parameters within niagara, does not validate from editor pushing changes or lauching a new session.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

  1. Adding the Dynamic Material Parameter module into a Niagara Emitter Stack

Expected Result

Passes Validation

Observed Result

Does not pass validation, returns error:
“Disallowed reference to /Niagara/Enums/Utility/ENiagara_DynamicMaterialParametersInputMode.ENiagara_DynamicMaterialParametersInputMode”

Platform(s)

All

2

hi @Logan.KeexFrame
you have to probably have to follow this
Material Expression Dynamic Parameter
Type control +F and Dynamic which will move the document to the required area

Disallowed is the way Fortnite protects against UE code not supported in UEFN

4

Ive got the same error. Had to go through all my niagara system and remove all dynamic parameters and put all the values possible into the main material blueprints. This fixed the error however my niagaras looking terrible so im guessing this is a uefn problem.

5

same error here

6

image
change to 1.2 version to validade

1 Like
7

I don’t have this option :confused:

Encountering the same issue though, none of my dynamic material parameters are valid anymore

8

From the documentation link

Right-click in the graph and type dynamic in the search bar. Select Dynamic Parameter to add that node.

12-create-dynamic-parameter
12-create-dynamic-parameter671×310 16 KB

Then you can use the previous post

1 Like
9

FORT-865724 is ‘Closed’ as ‘Fixed’. The issue will be addressed in 34.20.