I have two function that need to be initialized in afterScriptsLoaded.I tried define as below but it prompt error.

```
 <ltng:require scripts="/resource/unid__jQuery,/resource/unid__highchart" afterScriptsLoaded="{!c.generateChart},{!c.readData}" />

```

The error is:

> 
> Failed to save undefined: Cannot mix expression and literal string in
>  attribute value, try rewriting like {!'foo' + v.bar}: Source
> 
> 
> 

How to define more function in afterScriptsLoaded ?