“jx:mergeCells” has bugs

[taolive]

When using multisheet ，eg：

jx:each(items="datas", var="item", lastCell="E4" multisheet="item.sheetName")
jx:mergeCells(lastCell="A1",cols="item.addres.size()")

jx:mergeCells can‘t work，

Exception：

maven version:

<!-- jxls -->
<dependency>
    <groupId>org.jxls</groupId>
    <artifactId>jxls</artifactId>
    <version>2.12.0</version>
</dependency>

<dependency>
    <groupId>org.jxls</groupId>
    <artifactId>jxls-poi</artifactId>
    <version>2.12.0</version>
</dependency>

[SoltauFintel]

Please send us a pull request with a testcase.