关于水晶报表的formula全局变量的问题！

[songhuashao]

请问我现在有两个formula，一个aaa，另一个bbb，我在bbb中定义的一个shared的变量！我在aaa中要如何对他负值？

[13161795500]

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[shellmark]

Shared variables (Crystal syntax)
Shared variables use the same memory block to store the value of a variable throughout the main report and all of its subreports. Thus shared variables are even more general than global variables. To use a shared variable, declare it in a formula in the main report as in the following example:

Shared NumberVar x := 1000;

and declare it in a formula in the subreport as in the following example:

Shared NumberVar x;

In order to use shared variables, the variable must be declared and assigned a value before it can be passed between the main report and the subreport.

[FreshAir]

在aaa的开头，也要对这个shared变量进行定义(与bbb中定义一样，但不赋初值)，
然后，就可以对其进行引用或赋值。