diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmProcessInstanceController.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmProcessInstanceController.java
index 8af426e66d..67e7219f1d 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmProcessInstanceController.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/controller/admin/task/BpmProcessInstanceController.java
@@ -6,7 +6,6 @@ import cn.iocoder.yudao.framework.common.pojo.CommonResult;
 import cn.iocoder.yudao.framework.common.pojo.PageResult;
 import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
 import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
-import cn.iocoder.yudao.framework.common.util.string.StrUtils;
 import cn.iocoder.yudao.module.bpm.controller.admin.task.vo.instance.*;
 import cn.iocoder.yudao.module.bpm.convert.task.BpmProcessInstanceConvert;
 import cn.iocoder.yudao.module.bpm.dal.dataobject.definition.BpmCategoryDO;
@@ -165,9 +164,10 @@ public class BpmProcessInstanceController {
     @Operation(summary = "获得审批详情")
     @Parameter(name = "id", description = "流程实例的编号", required = true)
     @PreAuthorize("@ss.hasPermission('bpm:process-instance:query')")
+    @SuppressWarnings("unchecked")
     public CommonResult<BpmApprovalDetailRespVO> getApprovalDetail(@Valid BpmApprovalDetailReqVO reqVO) {
-        if (StrUtil.isNotEmpty(reqVO.getProcessVariablesStr())){
-            reqVO.setProcessVariables(JsonUtils.parseObject(reqVO.getProcessVariablesStr(),Map.class));
+        if (StrUtil.isNotEmpty(reqVO.getProcessVariablesStr())) {
+            reqVO.setProcessVariables(JsonUtils.parseObject(reqVO.getProcessVariablesStr(), Map.class));
         }
         return success(processInstanceService.getApprovalDetail(getLoginUserId(), reqVO));
     }
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java
index 65d38dcbe7..223aa1a7c8 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/framework/flowable/core/util/BpmnModelUtils.java
@@ -799,8 +799,8 @@ public class BpmnModelUtils {
             // 查找满足条件的 SequenceFlow 路径
             Gateway gateway = (Gateway) currentElement;
             SequenceFlow matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
-                        flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId())
-                                && (evalConditionExpress(variables, flow.getConditionExpression())));
+                    flow -> ObjUtil.notEqual(gateway.getDefaultFlow(), flow.getId())
+                            && (evalConditionExpress(variables, flow.getConditionExpression())));
             if (matchSequenceFlow == null) {
                 matchSequenceFlow = CollUtil.findOne(gateway.getOutgoingFlows(),
                         flow -> ObjUtil.equal(gateway.getDefaultFlow(), flow.getId()));
@@ -857,9 +857,12 @@ public class BpmnModelUtils {
         if (express == null) {
             return Boolean.FALSE;
         }
+        // 如果 variables 为空，则创建一个的原因？可能 expression 的计算，不依赖于 variables
         if (variables == null) {
-            return Boolean.FALSE;
+            variables = new HashMap<>();
         }
+
+        // 执行计算
         try {
             Object result = FlowableUtils.getExpressionValue(variables, express);
             return Boolean.TRUE.equals(result);
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
index fbe5f97f51..632ed47073 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmProcessInstanceServiceImpl.java
@@ -696,8 +696,9 @@ public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService
     }
 
     private void validateStartUserSelectAssignees(Long userId, ProcessDefinition definition,
-            Map<String, List<Long>> startUserSelectAssignees, Map<String,Object> variables) {
-        // 1.获取预测的节点信息
+                                                  Map<String, List<Long>> startUserSelectAssignees,
+                                                  Map<String,Object> variables) {
+        // 1. 获取预测的节点信息
         BpmApprovalDetailRespVO detailRespVO = getApprovalDetail(userId, new BpmApprovalDetailReqVO()
                 .setProcessDefinitionId(definition.getId())
                 .setProcessVariables(variables));
@@ -705,9 +706,11 @@ public class BpmProcessInstanceServiceImpl implements BpmProcessInstanceService
         if (CollUtil.isEmpty(activityNodes)){
             return;
         }
-        // 2.移除掉不是发起人自选审批人节点
-        activityNodes.removeIf(task -> !Objects.equals(BpmTaskCandidateStrategyEnum.START_USER_SELECT.getStrategy(), task.getCandidateStrategy()));
-        // 3.流程发起时要先获取当前流程的预测走向节点，发起时只校验预测的节点发起人自选审批人的审批人和抄送人是否都配置了
+
+        // 2.1 移除掉不是发起人自选审批人节点
+        activityNodes.removeIf(task ->
+                ObjectUtil.notEqual(BpmTaskCandidateStrategyEnum.START_USER_SELECT.getStrategy(), task.getCandidateStrategy()));
+        // 2.2 流程发起时要先获取当前流程的预测走向节点，发起时只校验预测的节点发起人自选审批人的审批人和抄送人是否都配置了
         activityNodes.forEach(task -> {
             List<Long> assignees = startUserSelectAssignees != null ? startUserSelectAssignees.get(task.getId()) : null;
             if (CollUtil.isEmpty(assignees)) {