how to creat ea in this condition ?

[cheaw]

i need your help.
if i want to buy 0.5 lot every price go down 1 % ?
how to use the condition box .
thankyou in advance .

[fxDreema]

You can use the Adjust box to make simple calculations over operands in the Condition block. Just click on "Adjust" and then write there something like *2 or -10 or +20 or *1/100 or something else. Everything you write will be included into the final code, so you can also use functions and variables.

Or maybe you want to put multiple pending orders at some distance from each other? In this case use those blocks that contain "grid" in their names, you will see them.

Or try "Round numbers detector". This block is interesting, but better read it's description.