diff --git a/api/src/schema.gql b/api/src/schema.gql
index dbd4a5c3e049f400d67ac2d33aae0b3db5e98b7c..7a13c77f44e5272fdb8eeec25a20317bb3f81518 100644
--- a/api/src/schema.gql
+++ b/api/src/schema.gql
@@ -215,6 +215,11 @@ input AlgorithmParamInput {
   value: [String!]!
 }
 
+enum ParamType {
+  STRING
+  NUMBER
+}
+
 input FormulaTransformation {
   name: String!
   operation: String!