I have a class with a constructor with 4 Integer args. It is configured in spring xml like so:

```
<bean id="mySearchService" class="app.service.MySearchService"
    c:maxConnectionsPerHost="${maxConnectionsPerHost}"
    c:maxTotalConnections="${maxTotalConnections}"
    c:connectionTimeout="${connectionTimeout}"
    c:soTimeout="${soTimeout}" />

```

My properties file has:

```
maxConnectionsPerHost=50
maxTotalConnections=50
connectionTimeout=500
soTimeout=100

```

But I get the following error:

> 
> Error creating bean with name 'mySearchService' defined in class path resource [applicationContext.xml]: Unsatisfied dependency expressed through constructor argument with index 1 of type [java.lang.Integer]: Ambiguous constructor argument types - did you specify the correct bean references as constructor arguments?
> 
> 
> 

This works if I use `<constructor-arg value="..." />` so I'm wondering if the c-namespace does not to type conversions in the same way as constructor-arg.