nuke: adding expression value knob to settings template

openpype/hosts/nuke/api/lib.py

@@ -1672,6 +1672,13 @@ def set_node_knobs_from_settings(node, knob_settings, **kwargs):
         if knob_name not in node.knobs():
             continue
 
+        if knob_type == "expression":
+            knob_expression = knob["expression"]
+            node[knob_name].setExpression(
+                knob_expression
+            )
+            continue
+
         # first deal with formatable knob settings
         if knob_type == "formatable":
             template = knob["template"]

openpype/settings/entities/schemas/projects_schema/schemas/template_nuke_knob_inputs.json

@@ -28,6 +28,22 @@
                             }
                         ]
                     },
+                    {
+                        "key": "expression",
+                        "label": "Expression",
+                        "children": [
+                            {
+                                "type": "text",
+                                "key": "name",
+                                "label": "Name"
+                            },
+                            {
+                                "type": "text",
+                                "key": "expression",
+                                "label": "Expression"
+                            }
+                        ]
+                    },
                     {
                         "key": "formatable",
                         "label": "Formate from template",