diff --git a/frontend/src/pages/user/workspace/Home.vue b/frontend/src/pages/user/workspace/Home.vue
index 42e4bf3..0b87b9a 100644
--- a/frontend/src/pages/user/workspace/Home.vue
+++ b/frontend/src/pages/user/workspace/Home.vue
@@ -693,15 +693,15 @@ export default {
         return true
       } else {
         if (milestone.status === milestoneStatusEnum.IMPLEMENTING) {
-          if (project.current_user_id === project.proposer_id) {
+          if (project.providers.includes(project.current_user_id)) {
             return false
           }
         } else if (milestone.status === milestoneStatusEnum.OUTSTANDING) {
-          if (project.current_user_id === project.requester_id) {
+          if (project.issuers.includes(project.current_user_id)) {
             return false
           }
         } else if (milestone.status === milestoneStatusEnum.PAID) {
-          if (project.current_user_id === project.proposer_id) {
+          if (project.providers.includes(project.current_user_id)) {
             return false
           }
         }
@@ -711,7 +711,7 @@ export default {
     handleMilestoneAction(project, milestone) {
       if (milestone.index === project.current_milestone) {
         if (milestone.status === milestoneStatusEnum.IMPLEMENTING) {
-          if (project.current_user_id === project.proposer_id) {
+          if (project.providers.includes(project.current_user_id)) {
             WorksapceApi.setMillestoneStatus(
               project.id,
               milestone.index,
@@ -725,7 +725,7 @@ export default {
               })
           }
         } else if (milestone.status === milestoneStatusEnum.OUTSTANDING) {
-          if (project.current_user_id === project.requester_id) {
+          if (project.issuers.includes(project.current_user_id)) {
             WorksapceApi.createMilestoneCheckoutSession(project.id, milestone.index).then(
               (response) => {
                 if (response.data.result) {
@@ -740,7 +740,7 @@ export default {
             )
           }
         } else if (milestone.status === milestoneStatusEnum.PAID) {
-          if (project.current_user_id === project.proposer_id) {
+          if (project.providers.includes(project.current_user_id)) {
             WorksapceApi.setMillestoneStatus(project.id, milestone.index, milestoneStatusEnum.DONE)
               .then((response) => {
                 this.fetchView()
@@ -766,19 +766,19 @@ export default {
         return 'Operation Complete'
       } else if (milestone.index === project.current_milestone) {
         if (milestone.status === milestoneStatusEnum.IMPLEMENTING) {
-          if (project.current_user_id === project.requester_id) {
+          if (project.issuers.includes(project.current_user_id)) {
             return 'Wait for completion'
           } else {
             return 'Mission complete'
           }
         } else if (milestone.status === milestoneStatusEnum.OUTSTANDING) {
-          if (project.current_user_id === project.requester_id) {
+          if (project.issuers.includes(project.current_user_id)) {
             return 'Payment'
           } else {
             return 'Wait for payment'
           }
         } else if (milestone.status === milestoneStatusEnum.PAID) {
-          if (project.current_user_id === project.requester_id) {
+          if (project.issuers.includes(project.current_user_id)) {
             return 'Wait for confirmation'
           } else {
             return 'Confirm receipt'
@@ -889,17 +889,17 @@ export default {
       switch (issue.status) {
         case projectIssueStatusEnum.OPEN:
           if (button_text === 'Resolve') {
-            return project.current_user_id === project.proposer_id
+            return project.providers.includes(project.current_user_id)
           }
           break
         case 1:
           if (button_text === 'Reopen' || button_text === 'Confirm') {
-            return project.current_user_id === project.requester_id
+            return project.issuers.includes(project.current_user_id)
           }
           break
         case projectIssueStatusEnum.CLOSED:
           if (button_text === 'Reopen') {
-            return project.current_user_id === project.requester_id
+            return project.issuers.includes(project.current_user_id)
           }
           break
         default: