How to use string variables for geometry filenames in do loops?

[Joseph Van Forst]

I'm trying to process multiple geometry files in a loop using string variables, but I'm getting an error. Here's my input:

```

memory, 605,m; 

bohr !use bohr units globally 

numbs = ['geom1.xyz', 'geom2.xyz', 'geom3.xyz']

 do i =1,#numbs 

               geometry=numbs(i) 

               basis=sto-3g !

              {put,xyz,rt$n.xyz,new} 

end do

```
I'm getting the error:
```
File /appl/soft/molpro/molpro_2025.2/lib/include/numbs(i) does not exist Input error
```

The problem is that Molpro interprets numbs(i) literally as a filename "numbs(i)" rather than evaluating it as an array element containing the actual geometry filename (e.g., 'geom1.xyz').

I also tried using an intermediate variable:

```
n = numbs(i) 

geometry=n

```

This is also not working, 

I know about command-line variables (geometry=geom$n.xyz with molpro -V n=1), but I specifically want to handle multiple files within a single input file using a loop. Because I want to define all the geometry file names within the input file and launch it as a single job. 

Any help would be appreciated!