10 years ago - i also tried to make an expiry - date in GDL - when i wanted to make money with it. But the market was too litttle - so i let it be.
Its relativ easy to do by getting the date and compare it with the current date - and jump out of the normal program.
In these days, it was not possible to scramble the code really. In normal Microsoft - word - it was possible to open the GDL-Script anyway...
Today i dont know a way to open crambled code of GDL.
Why dont you direct contact the programmer of this special library?
Was it so expensive?
Maybe you could tell him your problems with expiring date directly and you both get a solution?
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