diff --git a/src/core/controller.ts b/src/core/controller.ts
index e28f57e..b81c702 100644
--- a/src/core/controller.ts
+++ b/src/core/controller.ts
@@ -106,7 +106,7 @@ function runActions(bot: YveBot, rule: IRule, prop: string): Promise<any> {
 }
 
 function getNextFromRule(rule: IRule, answer?: Answer | Answer[]): RuleNext | null {
-  if (rule.options.length && answer) {
+  if (rule.options.length && answer !== undefined) {
     const option = utils.findOptionByAnswer(rule.options, answer);
     if (option && option.next) {
       return option.next;
@@ -290,6 +290,7 @@ export class Controller {
 
   public jumpByName(ruleName: string): Promise<this> {
     const idx = this._indexes[ruleName];
+    console.log(idx);
     if (typeof idx !== 'number') {
       throw new this.bot.exceptions.RuleNotFound(ruleName, this._indexes);
     }
@@ -299,6 +300,7 @@ export class Controller {
   public nextRule(currentRule: IRule, answer?: Answer | Answer[]): this {
     const { bot } = this;
     const nextRuleName = getNextFromRule(currentRule, answer);
+    console.log(nextRuleName);
     if (nextRuleName) {
       let ruleName;
       if (/flow:/.test(nextRuleName)) { // jump to flow