diff --git a/README.md b/README.md
index 77911912..4f62767e 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,12 @@ it("Can authenticate a valid userC123", ...
 
 **runName**: _string_ (optional) name of the Testrail run.
 
+**includeAllInTestRun**: _bool_ (optional: default is true) will return all test cases in test run. set to false to return test runs based on filter or section/group.
+
+**groupId**: _string_ (optional: needs "includeAllInTestRun": false ) The ID of the section/group
+
+**filter**: _string_ (optional: needs "includeAllInTestRun": false) Only return cases with matching filter string in the case title
+
 ## TestRail Settings
 
 To increase security, the TestRail team suggests using an API key instead of a password. You can see how to generate an API key [here](http://docs.gurock.com/testrail-api2/accessing#username_and_api_key).
diff --git a/src/lib/testrail.interface.ts b/src/lib/testrail.interface.ts
index 04a52f15..7ceeb2fa 100644
--- a/src/lib/testrail.interface.ts
+++ b/src/lib/testrail.interface.ts
@@ -5,6 +5,9 @@ export interface TestRailOptions {
   projectId: number;
   suiteId: number;
   assignedToId?: number;
+  includeAllInTestRun?: boolean;
+  groupId?: number;
+  filter?: string;
 }
 
 export enum Status {
diff --git a/src/lib/testrail.ts b/src/lib/testrail.ts
index c72cb248..a6dbdd89 100644
--- a/src/lib/testrail.ts
+++ b/src/lib/testrail.ts
@@ -5,12 +5,35 @@ import { TestRailOptions, TestRailResult } from './testrail.interface';
 export class TestRail {
   private base: String;
   private runId: Number;
+  private includeALL: Boolean;
+  private caseNumbersArray: Number[];
 
   constructor(private options: TestRailOptions) {
     this.base = `https://${options.domain}/index.php?/api/v2`;
   }
 
-  public createRun(name: string, description: string) {
+  public getCases () {
+    return axios({
+      method:'get',
+      url: `${this.base}/get_cases/${this.options.projectId}&suite_id=${this.options.suiteId}&section_id=${this.options.groupId}&filter=${this.options.filter}`,
+      headers: { 'Content-Type': 'application/json' }, 
+      auth: {
+          username: this.options.username,
+          password: this.options.password
+      } 
+    })
+      .then(response => response.data.map(item =>item.id))
+      .catch(error => console.error(error));
+  }
+
+  public async createRun (name: string, description: string) {
+    var slef = this;
+    slef.includeALL = true;
+    slef.caseNumbersArray = [];
+    if(this.options.includeAllInTestRun === false){
+      slef.caseNumbersArray =  await slef.getCases();
+      slef.includeALL = false;
+    }  
     axios({
       method: 'post',
       url: `${this.base}/add_run/${this.options.projectId}`,
@@ -23,7 +46,8 @@ export class TestRail {
         suite_id: this.options.suiteId,
         name,
         description,
-        include_all: true,
+        include_all: slef.includeALL,
+        case_ids: slef.caseNumbersArray
       }),
     })
       .then(response => {