diff --git a/app/src/pages/Protocols/hooks/__tests__/hooks.test.tsx b/app/src/pages/Protocols/hooks/__tests__/hooks.test.tsx
index b0783097138..ce09a610ff7 100644
--- a/app/src/pages/Protocols/hooks/__tests__/hooks.test.tsx
+++ b/app/src/pages/Protocols/hooks/__tests__/hooks.test.tsx
@@ -38,24 +38,28 @@ const mockRTPData = [
     displayName: 'Dry Run',
     variableName: 'DRYRUN',
     description: 'a dry run description',
+    type: 'boolean',
     default: false,
   },
   {
     displayName: 'Use Gripper',
     variableName: 'USE_GRIPPER',
     description: '',
+    type: 'boolean',
     default: true,
   },
   {
     displayName: 'Trash Tips',
     variableName: 'TIP_TRASH',
     description: 'throw tip in trash',
+    type: 'boolean',
     default: true,
   },
   {
     displayName: 'Deactivate Temperatures',
     variableName: 'DEACTIVATE_TEMP',
     description: 'deactivate temperature?',
+    type: 'boolean',
     default: true,
   },
   {
@@ -63,22 +67,34 @@ const mockRTPData = [
     variableName: 'COLUMNS',
     description: '',
     suffix: 'mL',
+    type: 'int',
     min: 1,
     max: 14,
     default: 4,
   },
   {
     displayName: 'PCR Cycles',
-    variableName: 'PCRCYCLES',
+    variableName: 'PCR_CYCLES',
     description: '',
+    type: 'int',
     min: 1,
     max: 10,
     default: 6,
   },
+  {
+    displayName: 'EtoH Volume',
+    variableName: 'ETOH_VOLUME',
+    description: '',
+    type: 'float',
+    min: 1.5,
+    max: 10.0,
+    default: 6.5,
+  },
   {
     displayName: 'Default Module Offsets',
     variableName: 'DEFAULT_OFFSETS',
     description: '',
+    type: 'str',
     choices: [
       {
         displayName: 'no offsets',
diff --git a/app/src/pages/Protocols/hooks/index.ts b/app/src/pages/Protocols/hooks/index.ts
index 5db38090c00..3b196dee63c 100644
--- a/app/src/pages/Protocols/hooks/index.ts
+++ b/app/src/pages/Protocols/hooks/index.ts
@@ -205,24 +205,28 @@ export const useRunTimeParameters = (
       displayName: 'Dry Run',
       variableName: 'DRYRUN',
       description: 'a dry run description',
+      type: 'boolean',
       default: false,
     },
     {
       displayName: 'Use Gripper',
       variableName: 'USE_GRIPPER',
       description: '',
+      type: 'boolean',
       default: true,
     },
     {
       displayName: 'Trash Tips',
       variableName: 'TIP_TRASH',
       description: 'throw tip in trash',
+      type: 'boolean',
       default: true,
     },
     {
       displayName: 'Deactivate Temperatures',
       variableName: 'DEACTIVATE_TEMP',
       description: 'deactivate temperature?',
+      type: 'boolean',
       default: true,
     },
     {
@@ -230,22 +234,34 @@ export const useRunTimeParameters = (
       variableName: 'COLUMNS',
       description: '',
       suffix: 'mL',
+      type: 'int',
       min: 1,
       max: 14,
       default: 4,
     },
     {
       displayName: 'PCR Cycles',
-      variableName: 'PCRCYCLES',
+      variableName: 'PCR_CYCLES',
       description: '',
+      type: 'int',
       min: 1,
       max: 10,
       default: 6,
     },
+    {
+      displayName: 'EtoH Volume',
+      variableName: 'ETOH_VOLUME',
+      description: '',
+      type: 'float',
+      min: 1.5,
+      max: 10.0,
+      default: 6.5,
+    },
     {
       displayName: 'Default Module Offsets',
       variableName: 'DEFAULT_OFFSETS',
       description: '',
+      type: 'str',
       choices: [
         {
           displayName: 'no offsets',
diff --git a/shared-data/js/types.ts b/shared-data/js/types.ts
index 6424fe8b7df..02c51469a54 100644
--- a/shared-data/js/types.ts
+++ b/shared-data/js/types.ts
@@ -599,13 +599,13 @@ interface IntParameter {
   default: number
 }
 
-interface EnumChoice {
+interface Choice {
   displayName: string
-  value: string
+  value: unknown
 }
 
-interface EnumParameter {
-  choices: EnumChoice[]
+interface ChoiceParameter {
+  choices: Choice[]
   default: string
 }
 
@@ -613,11 +613,14 @@ interface BooleanParameter {
   default: boolean
 }
 
-type RunTimeParameter = IntParameter | EnumParameter | BooleanParameter
+type RunTimeParamterTypes = 'int' | 'float' | 'str' | 'boolean'
+
+type RunTimeParameter = IntParameter | ChoiceParameter | BooleanParameter
 interface BaseRunTimeParameters {
   displayName: string
   variableName: string
   description: string
+  type: RunTimeParamterTypes
   suffix?: string
 }