multiple pos at the same time

inputs

@@ -4,6 +4,6 @@
   "{{ project_name }}.docker": "registry-vpc.cn-shanghai.aliyuncs.com/pgx-docker-registry/samtools:v1.3.1",
   "{{ project_name }}.cluster_config": "OnDemand bcs.a2.large img-ubuntu-vpc",
   "{{ project_name }}.bam": "{{ bam }}",
-  "{{ project_name }}.pos": "{{ pos_list.split(";") | tojson }}",
+  "{{ project_name }}.pos": {{ pos_list.split(";") | tojson }},
   "{{ project_name }}.sample": "{{ sample }}"
 }