Can't use hexadecimal numbers in a for loop

[x87]

for 0@ = 0 to 0x400//1024 // end

error 0014 Incorrect expression 0x400 >= 0. One of the variables has an unknown type, or the operands are incompatible.

[x87]

can't use model names

for 0@ = #BLISTA to #BOBCAT  // step 1

end // for