How do I read a variable name file?

[Rubén Roa-Ureta]

Hi:

I want to read text files that contain a single number but whose names 
changes according to user input, as in:

>Yr=input('Year :');
Yr: 1990
>filename=['SEPM_',num2str(Yr),'s2.txt']
filename = SEPM_1990s2.txt
>eval(eggstart=['load ',filename])

However, the single number in SEPM_1990s2.txt hasn't been assigned to 
eggstart

>eggstart
eggstart = load SEPM_1990s2.txt

whereas if I directly do the loading

>eggstart = load SEPM_1990s2.txt
eggstart =  the  single number in SEPM_1990s2.txt

the number is assigned.

What else should I do with the eval function to actually complete the 
assignment?

Thanks

Rubén