## Question on Internal Invocation of Contracts

I have a question about the internal invocation of a single contract to other contracts and would like to consult.

Such as figure1, using InnerTxn to call different methods of multiple contracts by calling a single method inside contract A. Here is the simple logic of the A contract.

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## Help with Opt-In of ASA to Smart Contract

In other words:
- In AssetTransfer, use: `Sender`, `AssetReceiver`
- In Payment, use: `Sender`, `Receiver`

Right?

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## Modifying Another Address Local Data in Foreign Contract

I want to use a smart contract (called A SC) to call a B smart contract (called B SC) setter method.  
B SC setter method accepts an address, like:
```python
@Subroutine(TealType.none)
def set_worth(current_address: Expr, new_worth):
    return Seq(
        App.localPut(current_address, local_worth, new_worth)
    )
```

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## Creating a Smart Contract in Algorand Sandbox

Hello, bros!  
I use pyTeal to write smart contract code, and I compile it to a .teal file.  
I’m trying to use this teal file to create an application in the sandbox (dev).  
But, the console logs the following information:
```
data/core/approval.teal: 1: unsupported version: 6
/data/core/approval.teal: 2: field "Ap...
```  
Thank you! I updated my sandbox, and this teal code has worked.