assigning value of a expression to a variable

Shell Programming and Scripting
1 
eval echo \$tts_space_name$count

i m getting output of this stmnt as

'TBS_ADOX_EXTR3'

but,

I m not able to assign this value to a variable .

i tried

export j=`eval echo \$tts_space_name$count`
eval j= `eval echo \$tts_space_name$count`

and when i do echo $j ... i get o/p as 1 or 2 which is $count

what could be the problem???

2

echo is unnecessary here.

eval 'export j=$tts_space_name'$count