textX: Scoping issue - problems to do a cross-ref of a variable with same name in two different contexts

Hello guys, I would appreciate your help in order to resolve this cross-referencing issue. In the grammar bellow, I need to recognize var1, var2 and var3 as belonging to its context(ZventoA and ZventoB) without conflicts:

from textx.metamodel import metamodel_from_str 
from textx.exceptions import TextXError
from textx.model import get_parent_of_type

grammar = """
 F:
     events *= Event; 

 Event: 
     'event' name=ID '(' parameters+=Variable[','] ')' ':'
     argumentos+=Repetition[',']
     'end'
 ;
 Repetition:
     ID '=' paramName=[Variable];

 Variable: name=ID;
 """
try:
    meta = metamodel_from_str(grammar, autokwd=True)
    print("Meta-Model OK")
except TextXError as e:
    print("Error in meta-model:")
    print(e)
    
code ='''
event ZeventA (var1,var2,var3):
    x1=var1,
    x2=var2,
    x3=var3
end

event ZeventoB (var1,var2,var3):
    x1=var1,
    x2=var2,
    x3=var3
end
'''
try:
    model = meta.model_from_str(code)
    print("Model ok")
except TextXError as e:
    print("Error in model: ", e)

But I have the following output when running the code above:

Meta-Model OK
Error in model:  None:3:8: error: name var1 is not unique.

When I change the name of var1 of event ZeventB to, for example ZeventB (var1aux,var2,var3), then the problem is transferred to var2

Meta-Model OK
Error in model:  None:4:8: error: name var2 is not unique.

How could I link var1, var2 and var3 to it’s specific events ZeventA and ZeventB? Thanks in advance.