why it doesn't work , please give me help

[SASKiwi]

@tianerhu  - It's possible your closing quote is not being recognised by SAS for some reason. Remove the line/s with the quotes and retest your program. If that doesn't fix your problem post your COMPLETE SAS log so we can check what is happening earlier in your program.

[tianerhu · Accepted solution]

Thank you for your help, SASKiwi .

I close the SAS software, and restart it , then my code runs well.
I don't know why , I did't fix my code. Just restart SAS.