TEXTIO : Parameter L error message

[vivo_m]

hello everybody,

i'm trying to read values from file but not sequentially
the file contains 100 line each having 55 values
i start reading from the 25th line till 75th line and skip the first and last 10 reads in each line

when i simulate got this error message "TEXTIO procedure READ(INTEGER) : Parameter L designates an empty string."

i've ensured that my reading region is having data..

any idea why i got this error and how can i solve this plzzzz...

 

[asjohnas]

I have made read in vhdl: https://opencores.org/project,workwithfiles

 

[TrickyDicky]

why not post the code with the error in it, and the file you're trying to read?