Thanks so much!

Best wish!

Dear Jianan Li,
It is exactly what the error message says: if you choose to save "multiple models in multiple files" you must provide a file name that contains either $name or $number.

You gave a file name "target_ab1.pdb" and this does not contain $name or $number.

Do you really want two files for your two models?  If so, you have to include $name or $number in the file name, for example, file name:

target_ab1$number.pdb

If you don't really want two files (one for ligand and one for receptor), i.e., you probably should combine ligand + receptor into one model before saving.

You can combine models with the Model Panel (open from Favorites menu) function "copy/combine" or the command "combine"
<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/modelpanel.html>
<http://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/combine.html>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                      
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Jan 14, 2023, at 10:05 PM, Jianan Li-Harbin Medical University via Chimera-users <chimera-users@cgl.ucsf.edu> wrote:
>
> Dear Chimera developers：
> I have a problem in using Chimera！
> I want to save a ligand-receptor complex file for further analysis，but I can not save a such PDB file！You can see the figure below！
> The target was protein, and the atr_1 was the ligand, all files were saved from the dock results of Swissdock online tool (figure 2)!
> I hope you can help me, thank you very much!
>
> Best wish,
> Jianan Li
> <3F942D54@A66BE50F.B897C363.jpg.jpg>
> <305B3130@608AEC4D.B897C363.jpg.jpg>